CN101675468A - improved ultrasonic attenuation materials - Google Patents
improved ultrasonic attenuation materials Download PDFInfo
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- CN101675468A CN101675468A CN200880014438A CN200880014438A CN101675468A CN 101675468 A CN101675468 A CN 101675468A CN 200880014438 A CN200880014438 A CN 200880014438A CN 200880014438 A CN200880014438 A CN 200880014438A CN 101675468 A CN101675468 A CN 101675468A
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Classifications
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- G—PHYSICS
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- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
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- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
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Abstract
Improved acoustic attenuation material and application are provided.A kind of improved acoustic attenuation material can comprise the fibrous woven layer of being made up of the porous polymer that comprises void space such as porous Teflon (PTFE).A kind of improved acoustic attenuation material can comprise the sheets of porous polymers that interweaves with epoxy resin layer.Sheets of porous polymers can comprise through hole.The embodiment of the ultrasonic transducer that comprises the backing spare with porous PTFE fibrous woven layer is provided.This ultrasonic transducer that comprises the backing spare with porous PTFE fibrous woven layer can be used for the 3-D supersonic imaging device.The embodiment of the ultrasonic transducer that comprises the multi-layer porous PTFE thin plate that interweaves with epoxy resin layer is provided.This ultrasonic transducer that comprises multi-layer porous PTFE thin plate can be used for ultrasound imaging catheter.
Description
Background
Acoustic attenuation material is widely used in the multiple application that needs the attenuate sound signal.For example, can use acoustic attenuation material at the sound-proof material that is used for Application in Building.Many these type of acoustic attenuation material need sizable volume to realize the Reduction Level of expecting.
Acoustic attenuation material also be introduced into need control acoustic energy than in the skinny device.Such application is the ultrasound imaging probe field.Ultrasound imaging probe is widely used in medical field.For example, ultrasonic probe is widely used in imaging applications in multiple outside, laparoscope, endoscope and the blood vessel.For example, the ultrasonoscopy that provides of imaging probe can be used for diagnostic purpose.
Ultrasound imaging probe generally includes a plurality of parallel piezoelectric transducer element of arranging along the longitudinal axis, and wherein each element interconnection is to pair of electrodes.Usually, these transducers are longitudinally divided by the cutting during making, and obtain realizing in imaging plane the independently element of transducer of electronic control and focusing.The electronic circuit that interconnects to electrode excites element of transducer, makes their emission ultrasonic energies.Element of transducer can convert received ultrasonic energy to electric signal, and these electric signal are processed and be used for producing image then.
Usually, transducer comprises the piezoelectric active layer with acoustics face, and acoustic signal is from this acoustics surface launching.Usually at the rear portion of active layer, the acoustic attenuation member is set in the active layer one side opposite with the acoustics face.The acoustic attenuation member is used for the undesired acoustical signal (for example can from the signal of surface launching behind the transducer and reflected back transducer back) of the acoustical signal that decay meeting interference acoustics face place receives.As understanding ground, for specific acoustic attenuation material, the acoustic attenuation ability strengthens with the increase of acoustic attenuation component volume usually.Therefore, when the acoustic attenuation component volume reduced, the acoustic attenuation ability weakened usually.Therefore, comprise the cumulative volume of ultrasonic probe of ultrasonic transducer and acoustic attenuation member and the acoustic attenuation ability that quality can depend in part on the material of acoustic attenuation member at least.
Summary
Along with the application of ultrasound imaging probe and purposes continue to enlarge, also enlarge producing the demand that higher imaging performance, ultrasonic probe more small-sized and/or the throughput rate raising design.With regard to this respect, realize that the improvement of performance, miniaturization and the production efficiency relevant with ultrasound imaging probe becomes and be even more important by improving the acoustic attenuation material in ultrasound imaging probe, use.In addition, the general demand that exists improved acoustic attenuation material.
In view of the foregoing, embodiment described herein purpose provides improved acoustic attenuation material.Another purpose provides the improved ultrasound transducer system that uses improved acoustic attenuation material.
In one aspect, provide a kind of acoustic attenuation material, it can be used for decaying and incides acoustic energy on this material.This material can comprise first ingredient of being made up of first polymkeric substance with pore texture and second composition of being made up of second polymkeric substance.The pore texture of first ingredient can be partially filled by second ingredient.When not having second kind of ingredient in the pore texture of first ingredient, first ingredient can have first modulus in flexure, and when second ingredient partly was arranged in the pore texture of first ingredient, first ingredient can have second modulus in flexure.First modulus in flexure is lower than second modulus in flexure.First ingredient can be made up of weaving and/or nonwoven porous polymer.
In another aspect, provide a kind of acoustic attenuation material, it comprises the ground floor of the acoustic energy that being applicable to decays has the frequency between 100kHz and the 100MHz.This ground floor can have first rigidity and first acoustic attenuation.This acoustic attenuation material also can comprise the second layer with second rigidity and second sound decay.First rigidity can be less than second rigidity, and the big at least twice of the comparable second sound decay of first acoustic attenuation.Ground floor can be made up of weaving and/or nonwoven porous polymer.
In related fields, a kind of acoustic attenuation material that comprises textle layers can be used for decaying and incides acoustic energy on the material.This textle layers can be made up of plurality of fibers.These fibers can be made up of porous Teflon (PTFE).Textle layers can limit the void space between these fibers, and these void spaces to small part is filled by fluorothermoplastic (THV).
In another aspect, provide a kind of can be used for decaying incide the acoustic attenuation material of the acoustic energy on it, this material comprises multilayer nonwoven film and multilayer supporting course.This nonwoven film can be made up of porous polymer.This multilayer nonwoven film can interweave with the multilayer supporting course.These supporting courses can be made up of supporting material.This supporting material can be porous or atresia.These supporting courses can be porous or atresia.
In another aspect, provide a kind of acoustic attenuation material, its be configured to make be transmitted to the acoustic beam of second side of this material from first side of this material must be by poromeric at least a portion.In this acoustic attenuation material, also can comprise reinforcement material.Poromeric acoustic attenuation can be the twice at least of the acoustic attenuation of reinforcement material.
In another aspect, provide a kind of method, it may further comprise the steps: the member that will comprise the porous polymer layer is placed in the path of the acoustic energy that will decay; In this member, absorb at least a portion of this acoustic energy; And with one deck supporting material supporting cellular polymeric layer at least.This porous polymer can be the weaving and/or nonwoven.This method also can comprise the abutment surface location, front side with this material, and absorbs energy that sends from this surface and the energy that incides the rear side of this material in this material.This method also can comprise by this material being placed on the acoustic energy in the predetermined of decaying in the predetermined.
In aspect another, provide a kind of acoustic attenuation material, it comprises the textle layers that is applicable to ultrasound transducer means and reinforcement material.This textle layers can be used for the acoustic energy incident thereon of decaying.This textle layers can be made up of a plurality of multiporous fibers that define void space therebetween.Reinforcement material can partially filled at least this void space.
One embodiment can comprise second textle layers that contains second plurality of fibers.Second plurality of fibers can be a porous, and can limit the second textle layers void space.Reinforcement material can the partially filled at least second textle layers void space.In various embodiments, epoxy resin layer can be set between the two-layer textle layers.
In one embodiment, reinforcement material can comprise epoxy resin, THV, PEP (FEP), PTFE, polyethersulfone (PES), ethene-FEP multipolymer (EFEP), thermoplastic polyester (PET), polyetheretherketone (PEEK), polyetherimide (PEI), polycarbonate (PC), liquid crystal polymer (LCP) or their any combination.In one embodiment, plurality of fibers can comprise the porous polymer of selecting from comprise PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefinic group.
In one embodiment, this acoustic attenuation material acoustic energy in the ultrasonic range that can be used for decaying.For example, this acoustic attenuation material acoustic energy between 100kHz and the 100MHz that can be used for decaying.
In another aspect, provide a kind of ultrasound transducer system, it comprises active layer harmony damping layer.This active layer can have acoustics face and back (opposite with the acoustics face), and comprises at least one ultrasound transducer element.This acoustic attenuation layer can comprise porous polymer and reinforcement material, and interconnects to the back of active layer.In a kind of the setting, reinforcement material can partly be sucked in poromeric porous structure.
In one embodiment, this ultrasound transducer element can be used for launching ultrasonic signal, receives ultrasonic signal, or has not only launched but also receive ultrasonic signal.At least one ultrasound transducer element can be smooth.At least one ultrasound transducer element can be crooked.In one embodiment, reinforcement material can comprise thermoplastic and/or thermosets.
The ultrasound transducer system of numerous embodiments can comprise the back that is arranged on active layer and the middle layer between the acoustic attenuation layer.This middle layer can comprise epoxy resin, silicone rubber, tungsten, aluminium oxide, mica, microsphere or their any combination.
In aspect another, provide a kind of ultrasound transducer system, it comprises active layer harmony damping layer.This active layer can have acoustics face and back (opposite with the acoustics face), and comprises at least one ultrasound transducer element.This acoustic attenuation layer can comprise porous polymer fibrous woven layer and reinforcement material, and interconnects to the back of active layer.The void space of this reinforcement material between can the fiber of partially filled at least acoustic attenuation layer.In a kind of the setting, this acoustic attenuation layer can comprise multi-layered textile layer and the adhesive phase between the acoustic attenuation layer that adjoins, and these adhesive phases are used for the acoustic attenuation layer is joined to together.
One embodiment can comprise electrical connecting member.This electrical connecting member can be made up of insulating material and a plurality of independently conductive path.In a plurality of conductive paths each can be arranged to at least one ultrasound transducer element in corresponding one become laterally and with it to electrically contact.
In a kind of the setting, backing spare can comprise a plurality of continuous paths by this backing spare.These paths to small part is filled by conductive material, thereby the conductive path by backing spare is provided.
In another aspect, provide a kind of ultrasound transducer system, it comprises active layer and backing spare.This active layer can have acoustics face and back (opposite with the acoustics face), and comprises at least one ultrasound transducer element.This backing spare can comprise supporting material.This backing spare can comprise one deck nonwoven film at least, and this nonwoven film is made up of the porous polymer that the multilayer supporting course of forming with supporting material interweaves.
In one embodiment, the nonwoven film can comprise and is supported the partially filled at least a plurality of through holes of material.Can arrange the nonwoven film that adjoins so that some through hole at least in a plurality of through holes of specific nonwoven film does not align with any through hole of the nonwoven film that adjoins.Can arrange the nonwoven film that adjoins so that the great majority in a plurality of through holes of specific nonwoven film or all through holes do not align with any through hole of the nonwoven film that adjoins.In one embodiment, the thickness of each layer nonwoven film can be less than 200 microns (for example between 1 and 200 microns), and the thickness of each layer can be thick less than 200 microns (for example between 1 and 200 microns) in a plurality of supporting course.
In one embodiment, each be parallel to active layer orientation in film and the supporting course.In another embodiment, each in film and the supporting course can be directed at angle with respect to active layer.
In one embodiment, film and supporting course can not have through hole.In such setting, the thickness of each layer nonwoven film can be less than 800 microns (for example between 1 and 800 microns), and each the thickness in a plurality of supporting course can be less than 500 microns (for example between 1 and 500 microns).In addition, in such setting, supporting material can be made up of polymkeric substance, pottery, metal or their combination.This supporting material can be porous or atresia.The multilayer supporting course can be porous or atresia.Comprise in the embodiment of polymkeric substance that at supporting material polymkeric substance can be thermosets, thermoplastic, fluoropolymer, epoxy resin or their any combination.In addition, a plurality of interconnection layers can be set between the film and supporting course that adjoins.Interconnection layer can comprise that the two sides is provided with the carrier of bonding agent.Interconnection layer can join the film that adjoins to supporting course.
In another aspect, provide a kind of ultrasound transducer system, it comprises active layer and backing spare.This active layer can have acoustics face and back (opposite with the acoustics face), and comprises at least one ultrasound transducer element.This backing spare can comprise first and opposite second of being provided with this first.This backing spare can interconnect to the back of active layer.This backing spare can comprise porous polymer and reinforcement material, and can be configured to make be transmitted to the acoustic beam of its back from first face of ultrasound transducer element must be by poromeric at least a portion.Optional majority pore polymer and reinforcement material are so that total modulus in flexure of backing spare is the twice of the modulus in flexure of this porous polymer self at least.For the acoustic beam that is transmitted to the back from first face, this backing spare can have the acoustic attenuation of 25dB/cm at least under 1MHz.Can select this porous polymer and reinforcement material so that poromeric acoustic attenuation is the twice of the acoustic attenuation of reinforcement material at least.
In another aspect, provide a kind of ultrasound transducer system, it comprises active layer and backing spare.This active layer can have acoustics face and back (opposite with the acoustics face), and comprises at least one ultrasound transducer element.This backing spare can comprise multilayer film, and these films are made up of the porous polymer that interweaves with the multilayer supporting course that comprises supporting material.Multilayer film can comprise a plurality of parts of the part of having removed multilayer film.
Can arrange the film that adjoins so that some of the part of having removed multilayer film of certain films, great majority or whole a plurality of parts are not alignd with any through hole that adjoins film.
In aspect another, provide the method for the acoustic energy of the back that a kind of minimizing incides ultrasonic transducer.This method can comprise to be provided the back that contains poromeric material layer, adjoins ultrasonic transducer to locate this material layer and absorbs acoustic energy in this material layer.This material layer can have the front and back.This front can become to contact face-to-face with the back of ultrasonic transducer, and this back can contact with fluid.This absorption step can comprise that absorption is from the acoustic energy that sends later of ultrasonic transducer and the acoustic energy that is absorbed into the back that is mapped to this material layer.
In one embodiment, this fluid can be gas or liquid.In one embodiment, this material layer can comprise one deck porous polymer fibrous woven layer at least, and wherein the void space between the porous polymeric fibres to small part is filled by non-porous polymer.
The method of the acoustic energy on the back that a kind of minimizing incides ultrasonic transducer is provided in another aspect.This method can comprise provides the acoustic attenuation member that comprises nonwoven porous polymer layer and supporting material, the back of adjoining ultrasonic transducer to locate this acoustic attenuation member, and absorb acoustic energy in this acoustic attenuation member.This acoustic attenuation member can have front surface and rear surface.This front surface can contact face-to-face with the back of ultrasonic transducer.This absorption step can be included in the acoustic energy that sends later and the acoustic energy that incides the rear surface of acoustic attenuation member that absorbs in the acoustic attenuation member from ultrasonic transducer.
In one embodiment, this acoustic attenuation member can comprise the multilayer nonwoven porous polymer layer that interweaves with the multilayer supporting material.This multilayer nonwoven porous polymer layer can comprise a plurality of holes.
In aspect another, provide a kind of ultrasound catheter probe, it comprises the ultrasonic transducer that is arranged in the shell.This ultrasonic transducer comprises the active layer with acoustics face and back opposite with this acoustics face.This active layer can comprise at least one ultrasound transducer element.This ultrasonic transducer also can comprise the backing spare that interconnects to this back.This backing spare can comprise the multilayer acoustic attenuation layer that interweaves with the multilayer supporting course.
In one embodiment, multilayer acoustic attenuation layer can comprise porous polymer.In one embodiment, multilayer acoustic attenuation layer can comprise a plurality of via holes by wherein.These a plurality of via holes can be filled by supporting material to small part.
In another aspect, provide a kind of sound fading device, this device comprises acoustic attenuation material and interconnects to the supporting structure of this acoustic attenuation material.This acoustic attenuation material can be used for decaying and incides acoustic energy on this material, and can comprise first ingredient of being made up of porous polymer and second ingredient of being made up of supporting material.First ingredient can be the weaving and/or nonwoven.
In a kind of the setting, this poromeric porous structure can part be filled by second ingredient.In a kind of the setting, first ingredient can be made up of the multiporous fiber textle layers.
In one embodiment, first ingredient can comprise multilayer nonwoven film, and second ingredient can comprise the multilayer supporting course.These films and supporting course can interweave.In one embodiment, each layer in the multilayer film can comprise a plurality of via holes that limit by a plurality of paths of multilayer film.Described a plurality of via hole can be filled by this supporting material to small part.
More than the various features discussed about each above-mentioned aspect can be for any utilization in the above-mentioned aspect.Following after consideration further description, additional aspect and corresponding advantages will be apparent to those skilled in the art.
The accompanying drawing summary
Fig. 1 is the synoptic diagram of the embodiment of ultrasonic probe and region of interest.
Fig. 2 illustrates the embodiment of fibrous woven layer.
Fig. 3 is the sectional view of the fibrous woven layer of Fig. 2.
Fig. 4 is the sectional view of fibrous woven layer that is provided with Fig. 2 of packing material in the void space between the fiber.
Fig. 5 is the sectional view of the fibrous woven layer of the Fig. 2 that is provided with packing material and is provided with film in the top and the bottom of textle layers of the void space between the fiber.
Fig. 6 is the sectional view that is similar to the two layers of material shown in Fig. 5 that joins to together.
Fig. 7 is the sectional view that joins two layers of material as shown in Figure 4 together to.
Fig. 8 A is the sectional view that comprises the material of the multi-layer porous polymer sheet that interweaves with multilayer supporting material thin plate.
Fig. 8 B is the sectional view that comprises the material of the multi-layer porous polymer sheet that interweaves with multilayer supporting material thin plate.
Fig. 9 is the stereographic map in cross section of embodiment that comprises the sheets of porous polymers of a plurality of through holes.
Figure 10 is the sectional view of the thin plate of Fig. 9.
Figure 11 is the sectional view of the multi-layered sheet of Fig. 9 of interweaving with the multilayer supporting material.
Figure 12 is the stereographic map of the embodiment of ultrasonic probe assembly.
Figure 13 is the synoptic diagram of a part of the ultrasonic transducer of Figure 12.
Figure 14 illustrates the embodiment of the ultrasonic transducer that is attached to framework.
Figure 15 is the sectional view of the embodiment of ultrasound transducer assembly.
Figure 16 is the synoptic diagram of embodiment of the back lining components of ultrasound transducer assembly.
Figure 17 is the sectional view of the embodiment of ultrasonic transducer.
Figure 18 is included in the stereographic map of the embodiment of the ultrasonic probe assembly in the conduit.
Figure 19 is the sectional view of the conduit of Figure 18.
Figure 20 is the stereographic map that interconnects to the acoustic attenuation material of supporting structure.
Figure 21 is the process flow diagram of the method for acoustic energy attenuation.
Figure 22 is the process flow diagram that reduces the method that incides the acoustic energy on the ultrasonic transducer back.
Describe in detail
Fig. 1 is the synoptic diagram of the embodiment at ultrasonic probe 100, supersonic imaging device 109 and interest position 102.This ultrasonic probe 100 comprises at least one ultrasonic transducer 103.This ultrasonic transducer 103 can be the mechanical active layer that can convert electric energy to mechanical energy (for example acoustic energy) and/or mechanical energy be converted to electric energy.For example, ultrasonic transducer 103 can be used for the electrical signal conversion from supersonic imaging device 109 is become ultrasonic acoustic energy.In addition, ultrasonic transducer 103 can be used for converting received ultrasonic acoustic energy to electric signal.This ultrasonic transducer 103 can comprise at least one ground-electrode 112 and at least one signal electrode 113.At least one signal electrode 113 and at least one ground-electrode 112 can be electrically interconnected to supersonic imaging device 109 by at least one signal connecting line 110 (for example at least one signal wire) and at least one ground connection connecting line 111 (for example at least one ground wire) respectively.Ultrasonic transducer 103 can comprise the array of individual element of transducer, and each individual element of transducer all is electrically connected to supersonic imaging device 109 by signal connecting line and ground connection connecting line.This array can be the one-dimensional array that comprises the individual element of transducer of single file.This array can be the two-dimensional array that for example comprises the individual element of transducer of arranging with multiple row and multirow.The ground connection connecting line of whole array can be assembled, and is electrically connected to supersonic imaging device 109 by single ground connection connecting line.
In order to generate ultrasonoscopy, supersonic imaging device 109 can send electric signal to ultrasonic transducer 103, and ultrasonic transducer 103 can convert electric energy to ultrasonic acoustic energy 104 again to 102 emissions of interest position.Interest position 102 can be patient's a body inner structure, such as organ.Structure in the interest position 102 can be with a part of reflected back ultrasonic transducer 103 of acoustic energy 106.The acoustic energy 106 of reflected back can be converted to electric signal by ultrasonic transducer 103, and this electric signal can be sent to supersonic imaging device 109, and these signals are at the image at the processed and position 102 of can becoming interested, device 109 places.
To become the process of the ultrasonic acoustic energy 104 at guiding interest position 102 also can produce the other acoustic energy 107 of the direction of guiding except that interest position 102 from the electrical signal conversion of supersonic imaging device 109.This other acoustic energy 107 can return ultrasonic transducer 103 from the multiple structure reflection such as the shell 101 of ultrasonic probe 100, and 103 places are converted into electric signal at ultrasonic transducer.Can disturb with the electric signal of the acoustic energy 106 of reflected back from the electric signal of the other acoustic energy 107 of reflected back.Such interference can cause image quality decrease.
For reducing interference, can in ultrasonic probe 100, comprise acoustic attenuation material 108 from the other acoustic energy 107 of reflected back.Acoustic attenuation material 108 can interconnect to ultrasonic transducer 103 along ultrasonic transducer 103 and surface (for example rear surface of ultrasonic transducer 103) over against the surface opposite at interest position 102.Acoustic attenuation material 108 can prevent that a large amount of other acoustic energy 107 from returning the rear surface of ultrasonic transducer 103.Acoustic attenuation material 108 can also reduce the acoustic energy that arrives the rear surface of ultrasonic transducer 103 from other source.With regard to this respect, acoustic attenuation material 108 can provide the picture quality of the interference and the enhancing of reduction.Be connected directly in the embodiment of ultrasonic transducer 103 in acoustic attenuation material 108, at least one signal connecting line 110 can pass acoustic attenuation material 108.
In addition, acoustic attenuation material can be positioned other position in the ultrasonic probe 100, with the acoustic energy in the decay ultrasonic probe 100.For example, can be with a certain amount of acoustic attenuation material 114 facing to shell 101 location, with decay (for example absorbing) thus can reduce the acoustic energy of picture quality from the inside surface reflection of shell 101.Though in Fig. 1, be illustrated as treating selvedge line, can place acoustic attenuation material 114 along 101 pairs of acoustic energy attenuations of shell useful any inside surface or its part to the inside of shell 101.Also acoustic attenuation material 114 can be located near other structure (for example circuit board) in the ultrasonic probe 100, may be with decay from the acoustic energy of those other structure reflections.
Now description be can be used for acoustic energy attenuation, comprise the embodiment of the acoustic attenuation material of the ultrasonic energy in the decay ultrasonic probe.Fig. 2 is the diagrammatic sketch that can be used for the textle layers 200 of acoustic attenuation material.Textle layers 200 can be made up of a plurality of individual fibers, such as individual fibers 202a, 202b, 202c and 202d.Fig. 2 illustrates the embodiment of one type fabric, and wherein the individual fibers such as individual fibers 202a, 202b, 202c and 202d relative to each other interweaves the position.For example, fiber 202b is arranged at the first intersection point 203a place and (is orientated as Fig. 1) under the fiber 202a and interweaves between on the fiber 202c at the second intersection point 203b place.
The textle layers 200 of Fig. 2 is to can be used for the type of fabric of an embodiment and an embodiment of structure.Also can use the fabric of other type well known by persons skilled in the art.In addition, can change the multiple parameter of these fabrics to realize different fabric properties.For example, can change the distance between the fiber, such as the distance between fiber 202a and the 202c to realize various fabrics density.Can realize other textle layers 200 characteristics such as thickness by the structure that changes fibre diameter and/or fabric.The all fibres of textle layers 200 can be a same diameter, and perhaps these fibers can comprise multiple different diameter.
Textle layers 200 also comprises void space.Void space generally is any space that is occupied by arbitrary fiber of composition textle layers 200 in the fabric plane.For example, the space between fiber 202a, 202b, 202c and the 202d 204 is parts of the void space of textle layers 200 qualifications.
Fig. 3 is the sectional view of exemplary textle layers 200 along the profile line A-A of Fig. 2.Fig. 3 illustrates snakelike arrangement, and wherein the individual fibers such as fiber 202b interweaves with respect to other position of fibers in the fabric.
The individual fibers such as fiber 202b of textle layers 200 can comprise polymkeric substance.Can construct this polymkeric substance so that these fibers have predetermined porosity.Porosity is the measuring of void space in the material.Void space can be the space that does not comprise this polymkeric substance in the polymkeric substance.Porosity can be designated the ratio of the volume and the material cumulative volume of the void space in the material.Therefore, porosity will be between 0 and 1, and can be used as number percent and provide.Null value is represented the imporosity.Void space can comprise air, water or any other material.Void space can comprise vacuum.For example, the porosity of the fiber of textle layers 200 can be less than 85%.
In one embodiment, these individual fibers can be made up of porous polymer such as porous PTFE, porous carbamate, expanded polystyrene, porous silicone, porous fluoropolymer polymkeric substance, porous polyolefin or their combination.For example, porous polyolefin can be the form of porous polyethylene, porous polypropylene or their combination.Porous polyethylene, porous polypropylene and porous PTFE can be open forms.Porous carbamate, porous silicone, porous fluoropolymer polymkeric substance and expanded polystyrene can be the sealing forms.In one embodiment, individual fibers can be made up of single type porous polymer.In comprising the embodiment of porous PTFE, this porous PTFE can for example have and is similar to the U.S. Patent number 4,187 of authorizing Gore, the microstructure described in 390, and the full content of this patent is incorporated herein by reference.In comprising the embodiment of porous PTFE, this porous PTFE can for example have and is similar to the U.S. Patent number 5,476 of authorizing Bacino, the microstructure described in 598, and the full content of this patent is incorporated herein by reference.
Porosity can influence poromeric acoustic attenuation characteristic.For example, along with porosity increases, the amount of the air of being caught---it is the bad conductor of acoustic energy---also increases, thereby causes having the bulk material of unexpected acoustic attenuation characteristic.Porous polymer can be used for decaying and has the acoustic energy of the frequency between 100kHz and the 100MHz.For example, porous PTFE can have the acoustic attenuation ability greater than 50dB/cm under 1MHz.In fact, porous PTFE can have greater than 10 under 1MHz, the acoustic attenuation ability of 000dB/cm.By comparison, silicone RTV can have the acoustic attenuation less than 5dB/cm under 1MHz.
Fig. 4 is a textle layers 200 according to the sectional view of as shown in Figure 3 same orientation, and wherein packing material 401 is arranged in the void space between the fiber.As shown in Figure 4, packing material 401 can be filled the void space between the individual fibers, and seals these fibers.In such structure, packing material 401 can be realized some functions.
This type of function can be that the multiporous fiber for textle layers 200 provides mechanical support.With regard to this respect, packing material 401 can be textle layers 200 mechanical support is provided, thereby obtains having the textle layers 400 of the sealing higher than independent textle layers 200 crushing resistances.
The air of catching in the porous structure of the individual fibers of the also salable textle layers 200 of packing material 401 or other gas.With regard to this respect, packing material 401 can surround and seal individual fibers, so that the air or other gas that are trapped in these individual fibers can not escape into the peripheral region.Equally, the gas or the liquid that can prevent textle layers 400 outsides that seal enters the hole of the individual fibers of textle layers 200.
At polymkeric substance is that packing material 401 can surround the individual fibers of textle layers 200 and can not be penetrated in the fiber in a large number in the embodiment of open form polymkeric substance.Alternatively, packing material 401 can partly be inhaled into the individual fibers of (for example part is infiltrated) textle layers 200.Such part suction can cause the physical strength that strengthens.The part that the individual fibers of textle layers 200 is not filled material 401 fillings can comprise for example inhaled air.Therefore, the acoustic attenuation characteristic that is associated with the void space of the individual fibers of textle layers 200 can be filled material 401 in the individual fibers of textle layers 200 and obtain reservation after surrounding.May there be three different districts in open form polymkeric substance about existing part to suck.First district can be the porous polymer that does not have packing material.Second district can be the packing material place of the interstice coverage of filling porous polymkeric substance.The floor that the 3rd district can be made up of the packing material of porous polymer outside.
At polymkeric substance is that packing material 401 can partly be filled the surface imperfection place of the individual fibers of textle layers 200 in the embodiment of sealing form polymkeric substance.Engaging between the individual fibers that can promote textle layers 200 and the packing material 401 filled on such surface.
As understanding ground, spacing between size by changing porosity such as the polymkeric substance that for example uses, individual fibers in individual fibers, the individual fibers in the textle layers 200, the degree (for example when porous polymer is the opening form) that packing material 401 is inhaled into individual fibers and being used for seals the parameters such as amount of the packing material 401 of textle layers 200, can realize the multiple machinery and the acoustic characteristic of the textle layers 400 that seals.In one embodiment, packing material 401 can be thermoplasticity and/or thermosets.Packing material 401 can comprise THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC, LCP or their combination.Exemplary thermoplastic material is THV, the Dyneon that sells such as the 3M company of Saint Paul City, State of Minnesota, US
TMTHV.In the illustrative embodiments that comprises porous PTFE and THV, PTFE and THV are combined beneficial, its reason be the acoustic impedance of these two kinds of materials enough similar with acoustic propagation velocity and can be at two kinds of materials cause a large amount of reflections at the interface.
Forward Fig. 5 to, acoustic attenuation material member 500 can comprise first extra play 501 and second extra play 502 of the textle layers 400 that can interconnect to sealing.In the embodiment that substitutes, acoustic attenuation material member 500 can comprise single extra play 501 and not have second extra play 502. Extra play 501 and 502 can comprise the polymkeric substance with predetermined porosity level. Extra play 501 and 502 can provide additional acoustic attenuation ability and additional physical strength is provided.The Tenara that the examples of materials that comprises the textle layers of the porous PTFE fiber that is sealed among the THV has the Ge Er company in Delaware, USA Niu Huake city to make.
Fig. 6 is the sectional view of an embodiment, wherein utilizes layer of adhesive material 601 that two-layer acoustic attenuation material member 500 is as shown in Figure 5 joined to together.Layer of adhesive material 601 can be made up of the sticky polymers such as epoxy resin for example.In the exemplary realization of embodiment shown in Figure 6, each in the acoustic attenuation material member 500 comprises porous PTFE fiber (for example fiber 602) and porous PTFE extra play 603.The thickness of layer of adhesive material 601 is less than 0.025mm, and in the acoustic attenuation material member 500 each to be about 0.38mm thick.Can use thicker layer of adhesive material, thick such as for example 0.05mm.
In the embodiment of the acoustic attenuation material shown in Fig. 7, can utilize adhesive linkage 703 (for example epoxy resin) with two thin plates 701,702---be similar to respectively Fig. 4 sealing textle layers 400 and comprise the sealant of weaving porous polymeric fibres---join to together, to form the acoustic attenuation material 700 that keeps flexible and have specific acoustic attenuation characteristic.
The described material of the one deck at least that contains the polymer fiber textle layers with void space that comprises can be used for multiple acoustic attenuation application.Such material can use in the ultrasonic probe such as the above-mentioned ultrasonic probe of Fig. 1.These materials also can be used for other acoustic attenuation and use.
Fig. 8 A is the sectional view of acoustic attenuation material 800, and this material comprises a plurality of sheets of porous polymers 801 (for example film) that interweave with a plurality of supporting material thin plates 802 (for example film and/or film).For example, such acoustic attenuation material 800 can be used for acoustic energy attenuation, comprises the ultrasonic energy in the decay ultrasonic probe.The porous polymer of sheets of porous polymers 801 can be one or more in the porous polymer discussed above.This sheets of porous polymers can be made up of the nonwoven porous polymer.For example, supporting material thin plate 802 can be made up of stupalith, polymkeric substance, metal or their combination.Comprise in the embodiment of polymkeric substance that at supporting material thin plate 802 this polymkeric substance can be thermosetting or thermoplastic.For example, this polymkeric substance can be epoxy resin or fluoropolymer.
Supporting material thin plate 802 can be than sheets of porous polymers 801 rigidity more.With regard to this respect, in acoustic attenuation material 800, sheets of porous polymers 801 available acoustic attenuations, and supporting material thin plate 802 can provide than the bigger rigidity of sheets of porous polymers 801 independent attainable rigidity.With regard to this respect, supporting material 802 can have than stronger resistance to crushing of sheets of porous polymers 801 and bigger modulus in flexure.For example, the modulus in flexure of supporting material 802 can be the twice at least of the modulus in flexure of sheets of porous polymers 801.Also for example, the modulus in flexure of sheets of porous polymers 801 can be less than 20MPa, and the clean modulus in flexure of acoustic attenuation material 800 can be greater than 40MPa.
Can construct the individual thin plate of acoustic attenuation material 800 respectively, they are laminated to form acoustic attenuation material 800 together then.Can use bonding agent that each layer of stepped construction joined to together.Can be by the processing layer overlapping piece so that supporting material thin plate 802 parts are inhaled in the sheets of porous polymers 801, each layer of this stepped construction is bonded together.
Can use the adhesive phase that is arranged on the carrier that each layer of stepped construction joined to together.This bonding agent can be pressure-sensitive, such as for example propenyl contact adhesive.For example, double sticky tape thin layer 803 can be arranged between the adjacent courses of sheets of porous polymers 801 and supporting material 802.Also can use the method for other laminated thin plate well known by persons skilled in the art.
The thickness that can change supporting material thin plate 802 and sheets of porous polymers 801 is to realize multiple machinery and acoustic characteristic.For example, shown in Fig. 8 A, the thickness of sheets of porous polymers 801 can be less than the thickness of supporting material thin plate 802.In other embodiments, these thin plates can be equal thickness, or the comparable supporting material thin plate of sheets of porous polymers 801 802 is thicker.
In one embodiment, each sheets of porous polymers 801 can have the thickness less than 800 microns, and each supporting material thin plate 802 can have the thickness less than 500 microns.For example, each sheets of porous polymers 801 can have the thickness between 1 and 800 micron, and each supporting material thin plate 802 can have the thickness between 1 and 500 micron.In specific illustrative embodiments, each sheets of porous polymers 801 can be about 30 micron thickness, and each supporting material thin plate 802 can be about 25 micron thickness.
Acoustic attenuation material 800 shown in Fig. 8 A illustrates individual layer and general construction orientation identical construction.Fig. 8 B is the sectional view of acoustic attenuation material 808, and this material comprises the polylith sheets of porous polymers 804 that interweaves with polylith supporting material thin plate 805.In the embodiment shown in Fig. 8 B, the orientation of individual layer 804,805 is orientated to angle 807 with respect to the general construction of acoustic attenuation material 808.This angle 807 can change to realize multiple acoustics and mechanical property.Optional sealant 806 can be added into the end face and/or the bottom surface of acoustic attenuation material 808, be exposed in the surrounding environment with the edge that prevents sheets of porous polymers 804 and/or supporting material thin plate 805.The number of plies that exists in the acoustic attenuation material 800 and 808 can be different with the number of plies shown in Fig. 8 A and the 8B.
The structure of Fig. 8 A make be transmitted to the acoustic beam of second side of acoustic attenuation material 800 from first side 810 of acoustic attenuation material 800 must be by the multilayer of the sheets of porous polymers such as sheets of porous polymers 801.Can select the orientation of the general structure of the angle 807 of structure of Fig. 8 B and acoustic attenuation material 808, must be so that be transmitted to the acoustic beam of second side 813 of acoustic attenuation material 808 by the multilayer of the sheets of porous polymers such as sheets of porous polymers 804 from first side 812 of acoustic attenuation material 808.
Can be used for multiple acoustic attenuation application with reference to figure 8A and the described material of the polylith sheets of porous polymers that interweaves with polylith supporting material thin plate that comprises of 8B.Such material can have the clean acoustic attenuation of 25dB/cm at least under 1MHz, and can be used for decaying and have the acoustic energy of the frequency between 100kHz and the 100MHz.Such material can use in the ultrasonic probe such as the ultrasonic probe of above-mentioned Fig. 1.These materials also can be used for other acoustic attenuation and use.
Fig. 9 comprises the stereographic map of a part of acoustic attenuation material of being formed and comprised the thin plate 900 of a plurality of through holes such as through hole 901 by porous polymer.In the exemplary embodiment, the thickness of thin plate 900 can be between 1 and 200 micron.The porous polymer of thin plate 900 can be one or more in the polymkeric substance discussed above.In one embodiment, thin plate 900 can be made of porous PTFE and/or other porous polymer (for example carbamate, silicone, fluoropolymer, polystyrene and polyolefin).Thin plate 900 can be made up of the nonwoven porous polymer.
The quantity in the size in hole (for example area in hole or diameter), hole and the pattern in hole all can be different, to be achieved as follows the specific material behavior of discussion.Figure 10 is the sectional view of the thin plate 900 of Fig. 9 along section line B-B.Can produce these holes by any appropriate means known in the art, comprise for example laser drill.These holes can evenly or unevenly distribute.These holes can all be same sizes, or the big I difference of individual body opening.
Figure 11 is the sectional view of the embodiment of rigid composite material 1100.This rigid composite material 1100 comprises the multi-layer porous polymer sheet such as acoustic attenuation material thin plate 900 and the additional webs 1101 of acoustic attenuation material.Additional webs 1101 can be made of same material, and can have the through hole characteristic identical with thin plate 900.As shown in figure 11, sheets of porous polymers can interweave with all layers of supporting material layer 1102.Supporting material layer 1102 also can occupy at least a portion of the through hole of sheets of porous polymers 900,1101.With regard to this respect, supporting material layer 1102 can form the rigid matrix of three-dimensional interconnection.For example, the thickness of the supporting material layer 1102 between the sheets of porous polymers 900,1101 can be between 1 and 200 micron thickness.
The combination of the supporting material layer 1102 that interweaves with the acoustic attenuation material layer provides the compound substance 1100 with uncommon acoustic attenuation and mechanical property.With regard to this respect, supporting material layer 1102 for example can comprise epoxy resin, THV, FEP, PES, EFEP, PTFE, PET, PEEK, PEI, PC, LCP or their combination, and has than stronger resistance to crushing of sheets of porous polymers 900,1101 and bigger modulus in flexure.For example, the modulus in flexure of supporting material layer 1102 can be the twice at least of the modulus in flexure of porous polymer thin slice 900,1101.Also for example, the modulus in flexure of porous polymer thin slice 900,1101 can be less than 20MPa, and the clean modulus in flexure of compound substance 1100 can be greater than 40MPa.
Therefore, compound substance 1100 can obtain physical strength from supporting material layer 1102, obtains the acoustic attenuation characteristic from sheets of porous polymers 900,1101 simultaneously.This compound substance can have the clean acoustic attenuation of 25dB/cm at least under 1MHz, and can be used for decaying and have the acoustic energy of the frequency between 100kHz and the 100MHz.
Change the thickness of different layers in the sheets of porous polymers and the structure in hole, can change the machinery and the acoustic characteristic of compound substance 1100.For example, as shown in figure 11, the hole in two thin plates 900,1101 is unjustified.Generally speaking, sheets of porous polymers 900,1101 will have than supporting material layer 1102 remarkable higher acoustic attenuation rate.Therefore, the acoustic energy by rigid composite material 1100 will mainly see through the structure of supporting material layer 1102.Staggered by the hole that makes sheets of porous polymers 900,1101, will force propagation to follow serpentine path by the acoustic energy of supporting material layer 1102.With regard to this respect, propagate at least a portion that any acoustic beam of basal surface 1104 must be by sheets of porous polymers 900,1101 by compound substance 1100 from top surface 1103.This will tend to than the hole situation in line of sheets of porous polymers 900,1101 sound energy attenuation to more, and can follow straight line path by compound substance 1100 by the acoustic energy of supporting material layer 1102.
Be similar to the alignment in the hole of sheets of porous polymers, the size in hole can be different so that the acoustic attenuation characteristic of expectation and the mechanical property balance of expectation with quantity.For example, generally speaking, bigger through hole can cause more rigidity and more solid compound substance 1100.Bigger through hole or more through hole also can form bigger path to the acoustic energy of propagating by rigid composite material 1100, and this can cause having the more rigidity of low total acoustic attenuation and more solid compound substance 1100.
In addition, be similar to above-mentioned situation, under the situation of having used open form polymkeric substance, may occur the part that some epoxy resin sucks in the porous polymer layer is sucked., can not occur basically sucking less than scheduled volume or used under the situation of sealing form polymkeric substance at the pore size of open form polymkeric substance.Under situation about occur sucking, may have with the thickness that reduces the porous polymer layer and/or increase the big or small similar effects of the through hole of porous polymer layer 900,1101.
And generally speaking, the zone that supporting material has sucked in the part of porous structure of porous polymer layer can be significantly harder than the zone of the porous polymer layer that does not have supporting material.For example, the supporting material zone that sucked the porous structure part of porous polymer layer can have than the modulus in flexure more than the big twice of modulus in flexure in the zone of the porous polymer layer of no supporting material.
Can and handle the suction degree that influences by processing.For example, in comprising the embodiment of porous PTFE, during the manufacturing of compound substance 1100, porous PTFE with use wet with solvent earlier before supporting material layer 1102 contacts, can improve the degree of supporting material to the porous PTFE suction.In addition, any pressure that imposes on compound substance 1100 during manufacture or afterwards can make supporting material layer 1102 be drawn in the porous polymer layer 900,1101.Pressure on the compound substance 1100 (for example permanent compression) the porous polymer layer 900,1101 of also can crushing.
Another embodiment uses the two-layer porous PTFE layer that interweaves with epoxy resin layer to construct.This porous PTFE layer comprises a plurality of holes.This embodiment does not show plastic yield under the 50psi compression.The similar embodiment in no a plurality of holes can show about 3% plastic deformation under the 50psi compression in the porous PTFE layer.
Blind hole can replace the above-mentioned through hole such as through hole 901.Such structure has been eliminated the continuous supporting material acoustic path by compound substance 1100.
Comprise that as described the material that contains the poromeric at least one thin plate in hole (for example through hole) can be used for multiple acoustic attenuation and uses.Such material can use in the ultrasonic probe such as the above-mentioned ultrasonic probe of Fig. 1.These materials also can be used for other acoustic attenuation and use.In fact, these materials can be widely used in the multiple application that needs acoustic energy attenuation.
Each above-mentioned acoustic attenuation material can be made on than the bigger main thin plate of the required size of specific application.For example, can make the main thin plate of acoustic attenuation material so that as the back lining materials in the ultrasonic transducer, it comprises the enough materials that are used for a plurality of individual ultrasound transducer systems.For example, main thin plate can be divided into individual part for use in individual ultrasound transducer system.This technology also can comprise the step with the exposed edge of the individual part of encapsulant (for example epoxy resin and/or thermoplastic fluoropolymer) sealing.
In the embodiment of the individual part (for example wherein not making main thin plate) of having made acoustic attenuation material, this technology can comprise the step with the exposed edge of encapsulant (for example epoxy resin and/or thermoplastic fluoropolymer) sealing acoustic attenuation material.
In above-mentioned each acoustic attenuation material, porous polymer can have than the remarkable bigger acoustic attenuation ability of the material that is used to provide supporting.For example, poromeric acoustic attenuation ability can be greater than the twice of the acoustic attenuation ability of supporting material.In addition, the comparable porous polymer of supporting material significantly harder (for example having bigger rigidity).For example, supporting material can have the modulus in flexure of the twice of poromeric modulus in flexure.And porous polymer can have at least 5% porosity.For example, porous polymer can have the porosity between 5% and 85%.
For example, can in controlling the system of acoustic energy, needs use above-mentioned material.In addition, because the decling phase of above-mentioned material unit thickness is to height, so the attenuating material of specific thicknesses can realize that than high attenuation perhaps Qi Wang damping capacity can realize with less attenuating material.A kind of ability in back is especially favourable in the application that needs miniaturization.Particularly, the example ultrasonic probe general using acoustic attenuation material of before being discussed with reference to figure 1 is controlled one or more active (for example piezoelectricity) acoustic energy that element produced.For example, in ultrasonic transducer, use above-mentioned material, can make better and the probe of the identical size of existing probe and/or littler transducer probe.
Figure 12 illustrates the stereographic map of ultrasonic probe assembly 1200.Probe assembly 1200 comprises shell 1201 and cable 1202.Cable 1202 interconnects to the supersonic imaging device (not shown).Generally speaking, probe assembly 1200 comprises and is included in the shell 1201 and can be used for by a plurality of ultrasonic transducers along the probe assembly face 1203 emission ultrasonic energies of an end of probe assembly 1200.The exocuticle that can be conducted through the patient with the ultrasonic energy of sound wave form enters patient's body inner structure.These sound waves can interact and reflection with a plurality of internals.Probe assembly 1200 detects these reflections then, and these reflections is shown as the image of patient's body inner structure by supersonic imaging device.
Transducer array in the probe assembly 1200 can be by the two-dimensional array of mechanically scanning (for example rotation) along elevation axis 1204.Can utilize this array further to control the acoustic energy of being launched perpendicular to the dimension of turning axle (for example elevation axis 1204).For example, can use along the transducer of elevation axis 1204 acoustic energy is shaped, to reduce secondary lobe and improvement focusing along elevation axis 1204.
Forward Figure 13 to, provided the schematic cross-section of one dimension ultrasound transducer system 1300.Ultrasound transducer system 1300 has the longitudinal axis 1305 and elevation axis 1304, and they for example are similar to the longitudinal axis 1205 and the elevation axis 1204 of the probe assembly of Figure 12 respectively.Ultrasound transducer system 1300 can be used for emission and/or receives ultrasonic signal.
Generally speaking, as is known to the person skilled in the art, transducer 1315 (comprising active layer and the following any optional matching layer that is attached to this active layer such as piezoelectric layer 1306) can be divided into the discrete parts (for example part 1309a is to 1309n, and wherein n represents the predetermined quantity of discrete parts) of predetermined quantity along the longitudinal axis 1305.In these discrete parts each can be element of transducer (for example, discrete parts 1309a can be an element of transducer).But these discrete parts electrical interconnections, thereby two or more discrete parts can be used as single transducer element (but for example discrete parts 1309a and 1309b electrical interconnection and play the single transducer element).Also can there be backing spare 1313.
Figure 13 illustrates along the longitudinal axis 1305 and is straight ultrasound transducer system 1300.Ultrasound transducer system 1300 can be along the longitudinal axis 1305 bendings.For example, can realize this bending by placing individual planar transducer element each other in certain angle along the longitudinal axis 1305.The individual element of transducer that Figure 13 also shows ultrasound transducer system 1300 is the plane along elevation axis 1304.In alternative constructions, the individual element of transducer of ultrasound transducer system 1300 can be along elevation axis 1304 bendings.
Generally speaking, signal electrode and ground-electrode are arranged as illustrated in fig. 13, and ground-electrode is in the side of piezoelectric 1320 over against the position of wanting imaging.The position of signal electrode and ground-electrode is interchangeable.In such embodiment, may must provide additional ground plane is with the shielded signal layer.Ground-electrode can be an individual electrode as shown in Figure 13, maybe can be a continuous earthing material layer that is positioned on each individual element of transducer.Individual element of transducer electrode can interconnect to electronic circuit system, and this electronic circuit system can provide sound wave to produce and sensing.
Optionally acoustic matching layer can interconnect to piezoelectric layer 1306.The ultrasound transducer system 1300 of Figure 13 shows the first optional matching layer 1307 and the second optional matching layer 1308 that interconnects to piezoelectric layer 1306.Optionally the existence of matching layer can be different with the structure shown in Figure 13 with quantity.Transducer 1315 comprises piezoelectric layer 1306 and any optional matching layer attached with it.
Return Figure 13, each individual discrete parts can separate by the kerf (for example kerf between discrete parts 1309c and the 1309d 1310) that produces during transducer 1315 cutting and adjacent discrete parts.Kerf can be filled with packing material.In addition, one or more acoustic lenses can interconnect to acoustics face 1314.
When piezoelectric layer 1306 emission acoustic energy, some acoustic energy will enter backing spare 1313.Because such acoustic energy is not directed to imaging volume 1208, so this acoustic energy of expectation decay.This acoustic energy of decaying helps to reduce the acoustic energy that returns piezoelectric layer 1306 by the backside reflection of piezoelectric layer 1306.The acoustic energy of these reflections can disturb from the acoustic energy of imaging volume 1208 reflected back piezoelectrics 1306, and this will cause image deterioration.
Backing spare 1313 can comprise middle layer 1301.Middle layer 1301 can be made up of ultrasound transducer design those skilled in the art known material or multiple material, such as for example epoxy resin, silicone rubber, tungsten, aluminium oxide, mica, microsphere or their combination.Backing spare 1313 also can comprise the second layer 1302.This second layer 1302 can be the high attenuating material of all materials that comprises the textile fibres layer of being made up of porous polymer (for example, these fibers can be made up of porous PTFE) as previously described and so on.For example, this second layer 1302 can be by forming with reference to figure 6 and/or 7 acoustic attenuation material of describing.
Figure 14 is the diagrammatic sketch of transducer and frame assembly 1400.Transducer and frame assembly 1400 comprise the ultrasound transducer system 1300 of the Figure 13 that is mounted to framework 1401.As above describe ground with reference to Figure 13, ultrasound transducer system 1300 can comprise transducer array 1315, middle layer 1301 and the second layer 1302.For example, transducer and frame assembly 1400 can be installed in the probe assembly 1200 of Figure 12.Transducer and frame assembly 1400 can be installed so that it can be around 1402 rotations of framework turning axle.In such system, and as mentioned above, acoustic beam can be handled and by making transducer and frame assembly 1400 around framework turning axle 1402 rotating machinery ground manipulation acoustic beam electronically along the longitudinal axis 1405.Can use motor or miscellaneous equipment (not shown) to make transducer and frame assembly 1400 around 1402 rotations of framework turning axle.
For with transducer array 1300 acoustics be coupled to the probe assembly face 1203 of Figure 12, transducer and frame assembly 1400 can be immersed in the fluid (for example liquid).This fluid can be comprised in the shell 1201 of probe assembly 1200 of Figure 12.
As mentioned above, transducer and frame assembly 1400 are rotated in shell 1201, to realize the scanning of acoustic beam along elevation axis 1204.In addition, as mentioned above, transducer and frame assembly 1400 can be immersed in the fluid.In such system, the size and/or the weight that reduce transducer and frame assembly 1400 are good.By reducing the size of transducer and frame assembly 1400, can reduce the transducer and the resistance of motion of frame assembly 1400 in the fluid that it is submerged.By reducing the weight of transducer and frame assembly 1400, can reduce the inertia of transducer and frame assembly 1400.Reducing the resistance of motion of transducer frame assembly 1400 and/or location accuracy that inertia can be improved, short motion response time and the power of motor of reduction requires etc.
Therefore, the benefit of using the backing spare that comprises the aforesaid porous polymer of one deck at least fibrous woven layer to replace traditional ultrasonic transducer back lining materials (for example silicone rubber) can provide weight and size to reduce.Equally, if, then can strengthen the acoustic attenuation of this backing spare with comprising that the backing spare of the similar size of one deck porous polymer fibrous woven layer replaces traditional ultrasonic transducer back lining materials at least.
In addition, the flexibility of above-mentioned porous polymer fibrous woven layer allows to make efficiently the transducer array of the bending such as the transducer array 1300 of Figure 14.For example, the transducer array 1300 of Figure 14 can be fabricated to smooth transducer array at first.With regard to this respect, smooth continuous piezoelectric material layer can interconnect to and comprise the backing spare of one deck porous polymer fibrous woven layer at least.At this piezoelectric of cutting with after forming individual membrane transducer array elements, can be with this assembly interconnect to the curved surface such as the curved surface 1403 of the framework 1401 of transducer and frame assembly 1400.Can fill the kerf that produces by cutting technique then.
Return Figure 13, first electrode layer 1321 and the second electrode lay 1322 can be electrically interconnected to supersonic imaging device in many ways.For example, can be electrically interconnected to the electrical interconnection that first electrode layer 1321 is implemented to first electrode layer 1321 of each individual element of transducer (for example discrete parts 1309a is to 1309n) by edge along transducer 1315.For example, discrete parts 1309c first electrode layer 1321 can interconnect to the exposed distal ends 1303 of discrete parts 1309c.
Figure 15 illustrates the other method of first electrode layer 1321 that supersonic imaging device is electrically interconnected to the discrete parts of transducer 1315.Figure 15 be the ultrasound transducer system 1300 of Figure 13 along the sectional view that the section line C-C of Figure 13 is got, wherein increased a plurality of electrical interconnection 1501a to 1501n.A plurality of electrical interconnection 1501a each in the 1501n extends through the middle layer 1301 and the second layer 1302.For example, electrical interconnection 1501a is electrically interconnected to first electrode layer 1321 of discrete parts 1309a, and extends through the middle layer 1301 and the second layer 1302.The expose portion 1503 of electrical interconnection 1501a is electrically interconnected to first electrode layer 1321 of discrete parts 1309a.This expose portion 1503 can utilize several different methods known in the art to be electrically interconnected to supersonic imaging device.Alternatively, electrical interconnection 1501a can not extend through the bottom surface 1504 of the second layer 1302 to 1501n.In such structure, electrical interconnection 1501a can utilize method known to those skilled in the art (for example wire-bonded) to interconnect to supersonic imaging device to 1501n.
Can form electrical interconnection 1501a to 1501n by at first setting up the hole of passing the middle layer 1301 and the second layer 1302.This can realize by for example laser drill.Can use conductive material to fill these holes (for example passing through electroplating technology) then.Electrical interconnection 1501a can be configured to make single electric connection line to be electrically interconnected to a plurality of discrete parts to 1501n.For example, electrical interconnection 1501a can be electrically interconnected to discrete parts 1309a and 1309b.In such structure, discrete parts 1309a and 1309b can constitute the single transducer element jointly, and electrical interconnection 1501b can not exist.Electrical interconnection 1501a can be laterally directed with respect to the discrete parts of their electrical interconnections to 1501n.
Figure 16 illustrates the other method of first electrode layer 1321 that supersonic imaging device is electrically interconnected to the discrete parts of transducer 1315.Figure 16 is the synoptic diagram that is used for the back lining components 1600 of ultrasound transducer assembly.For avoiding repetition, transducer array not shown in Figure 16.On the contrary, only show back lining components 1600.It is similar to ultrasound transducer system 1300 orientations of Figure 13 that back lining components 1600 is shown.
The back lining components 1600 of Figure 16 comprises the middle layer 1601 and the second layer 1602.Be similar to above about ultrasound transducer system 1300 ground of discussing, middle layer 1601 can be made up of the material known to the skilled or the multiple material in ultrasound transducer design field, and the second layer 1602 can be the high attenuating material of all materials that comprises the fibrous woven layer of being made up of porous polymer as described above and so on.Back lining components 1600 comprises interconnecting assembly 1603.Interconnecting assembly 1603 can be made up of insulating material 1604 and individual conductive member.As shown in figure 16, interconnecting assembly 1603 can be set between the part of the middle layer 1601 and the second layer 1602.In Figure 16, cut away along the line 1607 part to disclose the interior details of interconnecting assembly 1603.
Individual conductive member can be the individual lead such as lead 1605.Individual lead can be set in the insulating material in the slit such as slit 1606, and with respect to individual element of transducer horizontal orientation.With regard to this respect, interconnecting assembly 1603 can be made up of a plurality of electrical interconnections of passing back lining components 1600.Insulating material 1604 can be by forming with middle layer 1601 identical materials.
As described above with reference to Figure 1, can place acoustic attenuation material 114 along other surface in the ultrasonic probe 100.Similarly, in the embodiment the embodiment shown in Figure 12, can use above-mentioned acoustic attenuation material to come to other ingredient lining in shell 1201 and/or the probe assembly 1200.This type of of above-mentioned acoustic attenuation material used the unwanted acoustic energy that incides the ultrasound transducer array such as the transducer array 1300 of Figure 13 by minimizing, can help to improve picture quality.Generally speaking, can be with above-mentioned acoustic attenuation material facing to a surface alignment, wherein the front of acoustic attenuation material becomes relation face-to-face with this surface, and the back of this acoustic attenuation material contacts with fluid (for example air or water).In such position, acoustic attenuation material can be used to absorb the acoustic energy that sends from this surface and propagate and at the acoustic energy of the back of acoustic attenuation material incident by fluid.
Forward Figure 17 to, provided the schematic cross-section of ultrasound transducer system 1700.In Figure 17, cut away along the line 1711 and 1712 part, to disclose the interior details of ultrasound transducer system 1700.Ultrasound transducer system 1700 has the longitudinal axis 1705 and elevation axis 1704.Ultrasound transducer system 1700 is made up of the discrete parts of predetermined quantity, and they represent to 1709n with discrete parts 1709a that in Figure 17 wherein n represents the predetermined quantity of discrete parts.Ultrasound transducer system 1700 is shown to have the one-dimensional array of a single file n transducer, and wherein n represents the predetermined quantity of discrete parts.Alternatively, ultrasound transducer system 1700 can comprise the two-dimensional array of the discrete parts that is arranged in multirow and multiple row.
Generally speaking, as known in the art, transducer 1715 (being made up of piezoelectric layer 1706 and any optional matching layer attached with it) can be divided into along the discrete parts of the predetermined quantity of the longitudinal axis 1705 arrangements, and they are represented to 1709n with discrete parts 1709a in Figure 17.Be similar to reference to Figure 13 ground is discussed, these discrete parts can form element of transducer respectively, or they can make ups by electricity, make element of transducer of two or more discrete parts formation.Also can there be backing spare as described below 1701.
Optionally acoustic matching layer can interconnect to piezoelectric layer 1706.The ultrasound transducer system 1700 of Figure 17 demonstrates single optional matching layer 1707.Optionally the existence of matching layer can be different with the structure shown in Figure 17 with quantity.Transducer 1715 comprises piezoelectric layer 1706 and any optional matching layer attached with it.
The backing spare 1701 of ultrasound transducer system 1700 can comprise above about the described compound substance of Figure 11.With regard to this respect, backing spare 1701 can comprise one or more layers sheets of porous polymers, such as thin plate 1703a, the 1703b and the 1703c that interweave with supporting material layer 1702.Supporting material can for example be made up of epoxy resin.Among sheets of porous polymers 1703a, 1703b and the 1703c each can be made up of porous PTFE.Among sheets of porous polymers 1703a, 1703b and the 1703c each can comprise a plurality of through holes such as through hole 1708.A plurality of through holes can be filled by supporting material 1702 to small part.
Figure 17 illustrates the backing spare 1701 that comprises three layers of sheets of porous polymers 1703a, 1703b and 1703c.Various embodiments can use individual layer sheets of porous polymers, two-layer sheets of porous polymers or four layers or more multi-layered sheets of porous polymers.Sectional hole patterns in the sheets of porous polymers can be with shown in Figure 17 different.Can change hole size, quantity and pattern to realize the machinery and/or the acoustic characteristic of expectation.
As shown in figure 17, supporting material 1702 complete sealing porous polymer sheet 1703a, 1703b and 1703c.Can they be sealed in realize such structure in the supporting material 1702 then by cutting individual sheets of porous polymers 1703a, 1703b and 1703c in advance.
Alternatively, can be manufactured into the size more required than single ultrasound transducer system 1700 bigger for backing spare 1701.For example, can provide back lining materials thin plate than single ultrasound transducer system 1700 required big several times.The piezoelectric material layer of similar size and any optional matching layer that may need can interconnect to the back lining materials thin plate together.Can cut this assembly then between strip of piezoelectric material, to produce kerf.Can fill these kerfs then.Whole assembly can be cut into the individual ultrasound transducer system such as the ultrasound transducer system 1700 of Figure 17 then.
With regard to this respect, backing spare 1701 can be decreased to its final size (for example by cutting), the edge of wherein individual sheets of porous polymers 1703a, 1703b and 1703c exposes along the side of backing spare 1701.The application and the working environment that depend on ultrasound transducer system 1700, the edge of individual sheets of porous polymers 1703a, 1703b and 1703c can keep exposing, or these edges can sealed in manufacturing step (for example at the edge of backing spare 1701 placed around epoxy resin layer).Salable these edges enter the hole of sheets of porous polymers for example to prevent material, or additional mechanical integrity is provided.
Can realize electrical interconnection with the individual element of transducer of ultrasound transducer system 1700 according to being similar to the above mode of being discussed about the ultrasound transducer system 1300 of Figure 13.For example, can be electrically interconnected to first electrode layer 1721 by the edge along transducer 1715 realizes and, the electrical interconnection of first electrode layer 1721 of each individual element of transducer.For example, can abovely be electrically connected by backing spare 1701 according to being similar to, realize and the electrical interconnection of first electrode layer 1721 with reference to Figure 15 (for example by backing spare 1701 boring and electroplate) and the described mode of Figure 16 (for example using the interconnecting assembly that is similar to interconnecting assembly 1603).
In case for example be installed in the ultrasonic probe, then orientable ultrasound transducer system 1700 so that acoustics face 1714 near the outside of ultrasonic probes.Therefore, the rear portion of ultrasound transducer system 1700 (for example opposite back of backing spare 1701 and piezoelectric layer 1706) can be back to the outside of ultrasonic probe and towards the inside of ultrasonic probe.With regard to this respect, the back of backing spare 1701 can be exposed in the internal environment of the ultrasonic probe that may for example comprise air.
Figure 17 illustrates along elevation axis 1704 and is straight ultrasound transducer system 1700.In alternative constructions, the individual element of transducer of ultrasound transducer system 1700 can be along elevation axis 1704 bendings.
Figure 17 illustrates has the ultrasound transducer system 1700 that is similar to reference to the backing spare 1701 of the described material of figure 9-11.Notice that ultrasound transducer system 1700 also can use with reference to figure 8A and the described backing spare material of 8B and construct.
Figure 18 and 19 illustrates the exemplary application of the ultrasound transducer system 1700 of Figure 17.Figure 18 illustrates the conduit 1800 that comprises ultrasonic transducer.Conduit 1800 comprises shell 1801 that surrounds ultrasonic transducer and the pipe 1802 that interconnects.Pipe 1802 can comprise conductive path, with ultrasonic transducer and supersonic imaging device (not shown) electrical interconnection.Ultrasonic transducer in the conduit 1800 can be orientated along the longitudinal axis 1805 and elevation axis 1804, thereby acoustic energy beam can inswept imaging plane 1808.
The ultrasonic energy of sound wave form can be directed in patient's the body inner structure.These sound waves can interact and reflection with a plurality of internals.Ultrasonic transducer in the conduit 1800 detects these reflections then, and these reflections is shown as the image of patient's body inner structure by supersonic imaging device.
Figure 19 is the sectional view along the section line D-D of the conduit 1800 of Figure 18.The ultrasound transducer system 1700 that comprises transducer 1715 and backing spare 1701 is arranged in the shell 1801.Conduit 1800 also comprises the electrical interconnect assembly 1904 that is electrically interconnected to ultrasound transducer system 1700.This electrical interconnect assembly 1904 can be the GORE that for example can obtain from the Ge Er company in Delaware, USA Niu Huake city
TMThe MicroFlat flat cable.Conduit 1800 also can comprise service aisle 1905.
For example, can be according to constructing backing spare 1701 with reference to the described embodiment of figure 8A to 11.Should be understood that, because backing spare 1701 can be made up of the sheets of porous polymers of the high decay of unit thickness (with respect to traditional ultrasonic transducer back lining materials), so the backing spare 1701 comparable backing spares of being made up of traditional back lining materials (for example epoxy resin, silicone rubber) with similar damping capacity are thinner.Thinner rigid back backing member 1701 has some advantages.For example, in the circular pipe such as conduit 1800, when reducing backing spare thickness, can increase the breadth extreme of ultrasound transducer system 1700.Equally, when reducing backing spare thickness, can increase the free space of other ingredient in the conduit and/or reduce the overall dimensions of conduit.The rigidity of backing spare 1701 also is used in situation lower support that need not supplementary support member and/or position transducer 1715.In addition, the said method that is electrically interconnected to transducer 1715 by backing spare 1701 can cause need not the electrical connection along the edge of transducer 1715, thereby transducer 1715 and backing spare 1701 may extend to or near the shell 1801 of conduit 1800.
The acoustic attenuation material of Miao Shuing can be used for multiple position herein.As mentioned above, can use this acoustic attenuation material to come shell 1201 inner linings to probe assembly 1200.Figure 20 illustrates acoustic attenuation material 2001 and interconnects to (for example engaging with epoxy resin) supporting structure 2002 to form the illustrative embodiments of acoustic energy absorption panel 2000.Such panel 2000 can be positioned at multiple position to absorb acoustic energy.For example, can make the predetermined that this panel is arranged in wherein needs to reduce level of sound energy.This panel 2000 can comprise one or more in the above-mentioned acoustic attenuation material.
Figure 21 is the process flow diagram of the method for acoustic energy attenuation.Though this process flow diagram illustrates particular step with particular order, it only is used for illustrative purpose, and can rearrange the order of these steps of describing in Figure 21.First step 2101 comprises member is placed in the acoustic energy path that will decay.This member can comprise porous polymer and supporting material.This porous polymer can comprise PTFE, carbamate, polystyrene, silicone, fluoropolymer, polyolefin (for example tygon and polypropylene) or their combination.
This porous polymer can be the form of one or more layers textile fibres layer.This supporting material can occupy the part of the void space between the textile fibres.
This porous polymer can be a plurality of nonwoven thin plate individual layer forms.For example, multi-layer porous polymkeric substance can interweave with the multilayer supporting material.These thin plates can be continuous or these thin plates can punch.In the embodiment that these thin plates are perforated, supporting material can partially filled at least these holes.
This placement operation can comprise that this member is adjoined a surface to be placed, and wherein the front of this member contacts with this surface.This placement operation can comprise this member is placed in the predetermined with the acoustic energy in this predetermined of decaying.
Figure 22 is the process flow diagram that reduces the method for the acoustic energy that incides the ultrasonic transducer back.Though this process flow diagram illustrates particular step with particular order, it only is used for illustrative purpose, and can rearrange the order of these steps of describing in Figure 22.This acoustic energy can have the frequency between 100kHz and the 100MHz.
In comprising the poromeric embodiment of nonwoven, the nonwoven porous polymer can be the form of the polylith thin plate that interweaves with polylith supporting material thin plate.These thin plates can be continuous or these thin plates can punch.In the embodiment that these thin plates are perforated, supporting material can partially filled at least these holes.
Though foregoing detailed description has usually been described the embodiment relevant with the ultrasonic probe assembly with acoustic attenuation material, embodiment described herein needing can be used for other application and other ultrasound transducer build of acoustic attenuation.
Additional modifications and expansion to embodiment described above will it will be apparent to those skilled in the art.These modifications and expansion are intended to be included in the scope of the present invention as defined by the appended claims.
Claims (184)
1. ultrasound transducer system comprises:
Active layer with acoustics face and back, wherein said active layer comprises at least one ultrasound transducer element, wherein said back is in a described active layer side opposite with described acoustics face; And
Interconnect to the backing spare of described back, described backing spare comprises nonwoven film of one deck at least and the multilayer supporting course of being made up of the polymkeric substance with pore texture, and each layer in the wherein said nonwoven of one deck at least film interweaves with described multilayer supporting course.
2. ultrasound transducer system as claimed in claim 1 is characterized in that, at least one in described at least one ultrasound transducer element is smooth.
3. ultrasound transducer system as claimed in claim 1 is characterized in that, at least one in described at least one ultrasound transducer element is crooked.
4. ultrasound transducer system as claimed in claim 1, it is characterized in that, each layer in the described nonwoven of one deck at least film comprises a plurality of through holes, and wherein said multilayer supporting course comprises common supporting material, and at least a portion of described a plurality of through holes is filled by described common supporting material.
5. ultrasound transducer system as claimed in claim 4 is characterized in that, in described a plurality of through holes some does not align with any through hole of the nonwoven film that adjoins at least.
6. ultrasound transducer system as claimed in claim 5 is characterized in that, the great majority in described a plurality of through holes do not align with any through hole of the nonwoven film that adjoins.
7. ultrasound transducer system as claimed in claim 6 is characterized in that, described a plurality of through holes all do not align with any through hole of the nonwoven film that adjoins.
8. ultrasound transducer system as claimed in claim 4 is characterized in that described polymkeric substance is selected from the group of being made of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
9. ultrasound transducer system as claimed in claim 8 is characterized in that described polymkeric substance is PTFE.
10. ultrasound transducer system as claimed in claim 8 is characterized in that, described common supporting material is selected from the group of being made up of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
11. ultrasound transducer system as claimed in claim 4 is characterized in that, each layer in the described nonwoven of one deck at least film is between 1 and 200 micron thickness, and each layer in the wherein said multilayer supporting course is between 1 and 200 micron thickness.
12. ultrasound transducer system as claimed in claim 1 is characterized in that, each layer and described multilayer supporting course in the described nonwoven of one deck at least film are parallel to described active layer orientation.
13. ultrasound transducer system as claimed in claim 1 is characterized in that, each layer in the described nonwoven of one deck at least film and described multilayer supporting course are directed at angle with respect to described active layer.
14. ultrasound transducer system as claimed in claim 1, it is characterized in that, described backing spare comprises the described nonwoven film of multilayer, and wherein said multilayer nonwoven film respectively has the thickness between 1 and 800 micron, and wherein said multilayer supporting course respectively has the thickness between 1 and 500 micron.
15. ultrasound transducer system as claimed in claim 14 is characterized in that, described polymkeric substance is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
16. ultrasound transducer system as claimed in claim 15 is characterized in that, described polymkeric substance is PTFE.
17. ultrasound transducer system as claimed in claim 15 is characterized in that, described multilayer supporting course is made up of the material of selecting from the group of being made up of polymkeric substance, pottery and metal.
18. ultrasound transducer system as claimed in claim 15 is characterized in that, described multilayer supporting course is made up of the material of selecting from the group of being made up of thermosets, thermoplastic, fluoropolymer and epoxy resin.
19. ultrasound transducer system as claimed in claim 14 is characterized in that, also comprises being arranged on the film that adjoins and a plurality of interconnection layers between the supporting course, each in described a plurality of interconnection layers comprises:
Adhesive carrier with first surface and second surface;
Be arranged on first adhesive phase on the described first surface; And
Be arranged on second adhesive phase on the described second surface.
20. ultrasound transducer system as claimed in claim 19 is characterized in that, described multilayer interconnection layer can be used for making described film that adjoins and supporting course to be bonded with each other.
21. ultrasound transducer system as claimed in claim 1, it is characterized in that, also comprise a plurality of continuous paths by described backing spare, wherein said a plurality of continuous path to small part is filled by conductive material, and each in wherein said a plurality of continuous paths can be used for providing the conductive path by described backing spare.
22. a ultrasound transducer system comprises:
Active layer with acoustics face and back, wherein said active layer comprises at least one ultrasound transducer element, wherein said back is in a described active layer side opposite with described acoustics face; And
Backing spare, described backing spare comprises:
First side;
Second side that is provided with on the contrary with described first side;
Polymer film with pore texture; And
Reinforcement material,
Wherein said second side interconnects to described back, wherein said backing spare be configured to make be transmitted to the acoustic beam of described back from described first side must be by at least a portion of described polymer film.
23. ultrasound transducer system as claimed in claim 22 is characterized in that, described polymer film is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
24. ultrasound transducer system as claimed in claim 22 is characterized in that, described reinforcement material is selected from the group of being made up of polymkeric substance, pottery and metal.
25. ultrasound transducer system as claimed in claim 22 is characterized in that, described reinforcement material is selected from the group of being made up of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
26. ultrasound transducer system as claimed in claim 22 is characterized in that, the described polymer film with described pore texture has first modulus in flexure; And wherein said backing spare has total modulus in flexure of the twice at least of described first modulus in flexure.
27. ultrasound transducer system as claimed in claim 22 is characterized in that, described backing spare has the acoustic attenuation of 25dB/cm at least for the acoustic beam that is transmitted to described second side from described first side under 1MHz.
28. ultrasound transducer system as claimed in claim 22 is characterized in that, the acoustic attenuation with described polymer film of described pore texture is the twice at least of the acoustic attenuation of described reinforcement material.
29. ultrasound transducer system as claimed in claim 22 is characterized in that, described porosity is at least about 5%.
30. ultrasound transducer system as claimed in claim 22 is characterized in that, described polymkeric substance has first modulus in flexure; And wherein said backing spare has the modulus in flexure of the twice at least of described first modulus in flexure.
31. ultrasound transducer system as claimed in claim 30 is characterized in that, the modulus in flexure of described polymkeric substance is 20Mpa at least.
32. a sound fading device comprises:
Acoustic attenuation material, it can be used for decaying and incides acoustic energy on the described acoustic attenuation material; And
Interconnect to the supporting structure of described acoustic attenuation material, wherein said acoustic attenuation material comprises first nonwoven ingredient of being made up of the polymkeric substance with pore texture and second ingredient of being made up of supporting material.
33. sound fading device as claimed in claim 32 is characterized in that, described pore texture is partially filled by described second ingredient.
34. sound fading device as claimed in claim 32 is characterized in that, the described first nonwoven ingredient comprises multilayer film, and wherein said second ingredient comprises the multilayer supporting course, and wherein said multilayer film and described multilayer supporting course interweave.
35. sound fading device as claimed in claim 34 is characterized in that, each layer in the described multilayer film comprises a plurality of via holes that limit by a plurality of paths of described multilayer film, and at least a portion of wherein said a plurality of via holes is filled by described supporting material.
36. sound fading device as claimed in claim 35 is characterized in that, described porous polymer is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
37. sound fading device as claimed in claim 36 is characterized in that, described supporting material is selected from the group of being made up of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
38. sound fading device as claimed in claim 34 is characterized in that, described multilayer film respectively has the thickness less than 800 microns, and wherein said multilayer supporting course respectively has the thickness less than 500 microns.
39. sound fading device as claimed in claim 38 is characterized in that, described polymkeric substance is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
40. sound fading device as claimed in claim 39 is characterized in that, described supporting material is selected from the group of being made up of thermosets, thermoplastic, fluoropolymer and epoxy resin.
41. sound fading device as claimed in claim 39 is characterized in that, described supporting material is selected from the group of being made up of polymkeric substance, pottery and metal.
The acoustic energy of the described material of incident 42. an acoustic attenuation material, this material can be used for decaying, described material comprises:
By the first nonwoven ingredient that first polymkeric substance is formed, the described first nonwoven ingredient has pore texture; And
Second ingredient of forming by second polymkeric substance, wherein said pore texture to small part is filled by described second ingredient, the wherein said first nonwoven ingredient has first modulus in flexure during no described second ingredient in described pore texture, the wherein said first nonwoven ingredient has second modulus in flexure when described second ingredient partly is arranged in the described pore texture, wherein said first modulus in flexure is lower than described second modulus in flexure.
43. acoustic attenuation material as claimed in claim 42 is characterized in that, described first polymkeric substance is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
44. acoustic attenuation material as claimed in claim 42 is characterized in that, described second polymkeric substance is selected from the group of being made up of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
45. acoustic attenuation material as claimed in claim 42 is characterized in that, the described first nonwoven ingredient has the acoustic attenuation of 25dB/cm at least under 1MHz when described pore texture does not have described second ingredient.
46. acoustic attenuation material as claimed in claim 42 is characterized in that, the frequency of described acoustic energy is between 100kHz and 100MHz.
47. an acoustic attenuation material comprises:
First nonwoven layers, it is applicable to that decay has the acoustic energy of the frequency between 100kHz and the 100MHz, and has first modulus in flexure and first acoustic attenuation; And
The second layer with the decay of second modulus in flexure and the second sound, described first modulus in flexure are less than described second modulus in flexure, and described first acoustic attenuation is than the big at least twice of described second sound decay.
48. acoustic attenuation material as claimed in claim 47, it is characterized in that, described first nonwoven layers is made up of the polymkeric substance of selecting from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin, wherein said first nonwoven layers has pore texture, and the wherein said second layer is made up of the supporting material of selecting from the group of being made up of polymkeric substance, pottery and metal.
49. acoustic attenuation material as claimed in claim 48 is characterized in that, described first acoustic attenuation is 50dB/cm at least under the 1MHz.
50. acoustic attenuation material as claimed in claim 48 is characterized in that, described ground floor is made up of PTFE.
51. acoustic attenuation material as claimed in claim 48 is characterized in that, the part of described pore texture is filled by described supporting material.
Incide acoustic energy on the described material 52. an acoustic attenuation material, this material can be used for decaying, described material comprises:
Multilayer nonwoven film, described nonwoven film comprises the polymkeric substance with pore texture; And
The multilayer supporting course, wherein said multilayer nonwoven film and described multilayer supporting course interweave.
53. acoustic attenuation material as claimed in claim 52, it is characterized in that, the first nonwoven film of described multilayer nonwoven film has more than first via hole that limits by a plurality of paths of the described first nonwoven film, the second nonwoven film of wherein said multilayer nonwoven film has more than second via hole that limits by a plurality of paths of the described second nonwoven film, wherein said multilayer supporting course comprises common supporting material, and at least a portion of at least a portion of described more than first via hole and described more than second via hole is filled by described common supporting material.
54. acoustic attenuation material as claimed in claim 53 is characterized in that, at least a portion of described more than first via hole is not alignd with any via hole of described more than second via hole.
55. acoustic attenuation material as claimed in claim 54 is characterized in that, the great majority of described more than first via hole do not align with any via hole of described more than second via hole.
56. acoustic attenuation material as claimed in claim 55 is characterized in that, each via hole of described more than first via hole does not align with any via hole of described more than second via hole.
57. acoustic attenuation material as claimed in claim 53 is characterized in that, described acoustic attenuation material has the acoustic attenuation of 25dB/cm at least for the acoustic energy of propagating perpendicular to the described first nonwoven film under 1MHz.
58. acoustic attenuation material as claimed in claim 53 is characterized in that, described common supporting material comprises the material of selecting from the group of being made up of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
59. acoustic attenuation material as claimed in claim 53 is characterized in that, described polymkeric substance is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
60. acoustic attenuation material as claimed in claim 59 is characterized in that, described polymkeric substance is PTFE.
61. acoustic attenuation material as claimed in claim 52, it is characterized in that, described polymkeric substance is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin, and described multilayer supporting course is made up of the material of selecting from the group of being made up of polymkeric substance, pottery and metal.
62. acoustic attenuation material as claimed in claim 52 is characterized in that, described porosity is between 5% and 85%.
63. acoustic attenuation material as claimed in claim 52 is characterized in that, the frequency of described acoustic energy is between 100kHz and 100MHz.
64. acoustic attenuation material as claimed in claim 52 is characterized in that, described multilayer nonwoven film respectively has the thickness less than 800 microns, and wherein said multilayer supporting course respectively has the thickness less than 500 microns.
65., it is characterized in that as the described acoustic attenuation material of claim 64, also comprise the multilayer interconnection layer between the adjacent courses that is arranged on described multilayer nonwoven film and described multilayer supporting course, each layer in the described multilayer interconnection layer comprises:
Adhesive carrier with first surface and second surface;
Be arranged on first adhesive phase on the described first surface; And
Be arranged on second adhesive phase on the described second surface.
66., it is characterized in that described multilayer interconnection layer can be used for making the described adjacent courses in described nonwoven film and the described supporting course to be bonded with each other as the described acoustic attenuation material of claim 65.
67., it is characterized in that described acoustic attenuation material has the acoustic attenuation of 25dB/cm at least for the acoustic energy of propagating perpendicular to described nonwoven film as the described acoustic attenuation material of claim 64 under 1MHz.
68. an acoustic attenuation material comprises:
First side;
Second side that is provided with on the contrary with described first side;
Polymkeric substance with pore texture; And
Reinforcement material, the acoustic attenuation of wherein said polymkeric substance is the twice at least of the acoustic attenuation of described reinforcement material, wherein said polymkeric substance and described reinforcement material be configured to make be transmitted to the acoustic beam of described second side from described first side must be by at least a portion of described polymkeric substance.
69., it is characterized in that the described polymkeric substance with described pore texture has first modulus in flexure as the described acoustic attenuation material of claim 68; And
Wherein said acoustic attenuation material has total modulus in flexure of the twice at least of described first modulus in flexure.
70., it is characterized in that described first modulus in flexure is less than 20Mpa as the described acoustic attenuation material of claim 69, and described second modulus in flexure is 40Mpa at least.
71. as the described acoustic attenuation material of claim 68, it is characterized in that, described polymkeric substance is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin, and described reinforcement material is selected from the group of being made up of polymkeric substance, pottery and metal.
72., it is characterized in that described reinforcement material is selected as the described acoustic attenuation material of claim 68 from the group of being made of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
73., it is characterized in that described porosity is 5% at least as the described acoustic attenuation material of claim 68.
74., it is characterized in that described acoustic attenuation material has the acoustic attenuation of 25dB/cm at least for the acoustic energy of propagating to described second side from described first side as the described acoustic attenuation material of claim 68 under 1MHz.
75. the method for an acoustic energy attenuation, described method comprises:
To comprise that the poromeric member of multilayer nonwoven is placed in the path of the acoustic energy that will decay;
In described member, absorb at least a portion of described acoustic energy; And
Support described multilayer nonwoven porous polymer with one deck supporting material at least.
76., it is characterized in that described absorption step is included at least a portion that receives described acoustic energy in the described multilayer nonwoven porous polymer as the described method of claim 75, wherein said multilayer nonwoven porous polymer and the described supporting material of multilayer interweave.
77., it is characterized in that described multilayer nonwoven porous polymer is a perforated film as the described method of claim 76.
78. as the described method of claim 77, it is characterized in that, described porous polymer is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin, and described supporting material is made up of the material of selecting from the group of being made up of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
79., it is characterized in that a part of hole of the partially filled at least described perforated film of described supporting material as the described method of claim 77.
80., it is characterized in that described multilayer nonwoven porous polymer respectively has the thickness less than 800 microns as the described method of claim 76, wherein said multilayer supporting material respectively has the thickness less than 500 microns.
81. as the described method of claim 80, it is characterized in that, described porous polymer is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin, and wherein said supporting material comprises the material of selecting from the group of being made up of polymkeric substance, pottery and metal.
82. as the described method of claim 76, it is characterized in that, described member has front side and rear side, wherein said placement step comprises adjoins the described member of a surface alignment, wherein said front side contacts face-to-face with described surface, wherein said absorption step is included in the acoustic energy that absorption is sent from described surface in the described member and is absorbed into the acoustic energy that is mapped on the described rear side in described member.
83., it is characterized in that described placement step is carried out as the described method of claim 76 in predetermined, the wherein said absorption step acoustic energy in the described predetermined of decaying.
84. a ultrasound transducer system comprises:
Active layer with acoustics face and back, wherein said active layer comprises at least one ultrasound transducer element, wherein said back is in a described active layer side opposite with described acoustics face; And
Interconnect to the backing spare of described back, described backing spare comprises multilayer film of being made up of the polymkeric substance with pore texture and the multilayer supporting course of being made up of supporting material, wherein said multilayer film and described multilayer supporting course interweave, and wherein said multilayer film comprises a plurality of sections of the part of therefrom removing described multilayer film.
85. as the described ultrasound transducer system of claim 84, it is characterized in that, in described a plurality of sections some does not align with in described a plurality of sections of adjacent one deck any in the described multilayer film at least.
86., it is characterized in that the great majority in described a plurality of sections do not align with in described a plurality of sections of adjacent one deck any in the described multilayer film as the described ultrasound transducer system of claim 85.
87., it is characterized in that whole in described a plurality of sections do not align with in described a plurality of sections of adjacent one deck any in the described multilayer film as the described ultrasound transducer system of claim 86.
88., it is characterized in that described polymkeric substance is selected as the described ultrasound transducer system of claim 84 from the group of being made of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
89., it is characterized in that described polymkeric substance is PTFE as the described ultrasound transducer system of claim 88.
90., it is characterized in that described supporting material is selected as the described ultrasound transducer system of claim 84 from the group of being made of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
91. the method for the acoustic energy on the ultrasonic transducer back is incided in a reduction, described method comprises:
The acoustic attenuation that comprises nonwoven porous polymer layer and supporting material member is provided, and wherein said member has front surface and rear surface;
Adjoin the described back of described ultrasonic transducer and locate described acoustic attenuation member, wherein said front surface contacts face-to-face with described back;
In described acoustic attenuation member, absorb from the described acoustic energy that sends later; And
In described acoustic attenuation member, be absorbed into the acoustic energy that is mapped on the described rear surface.
92., it is characterized in that described acoustic attenuation member comprises the multilayer nonwoven porous polymer layer that interweaves with the described supporting material of multilayer as the described method of claim 91.
93., it is characterized in that each layer in the described multilayer nonwoven porous polymer layer comprises a plurality of holes as the described method of claim 92.
94., it is characterized in that described supporting material is selected as the described method of claim 93 from the group of being made of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
95., it is characterized in that described multilayer nonwoven porous polymer layer respectively has the thickness less than 800 microns as the described method of claim 92, the described supporting material of wherein said multilayer respectively has the thickness less than 500 microns.
96., it is characterized in that described supporting material is selected as the described method of claim 95 from the group of being made of polymkeric substance, pottery and metal.
97., it is characterized in that described porous polymer is selected as the described method of claim 91 from the group of being made of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
98., it is characterized in that described porous polymer is PTFE as the described method of claim 97.
99., it is characterized in that the frequency of described acoustic energy is between 100kHz and 100MHz as the described method of claim 91.
100. a ultrasound catheter probe comprises:
Shell; And
Be arranged on the ultrasonic transducer in the described shell, described ultrasonic transducer comprises:
Active layer with acoustics face and back, wherein said active layer comprises at least one ultrasound transducer element, wherein said back is in a described active layer side opposite with described acoustics face; And
Interconnect to the backing spare of described back, described backing spare comprises the multilayer acoustic attenuation layer that interweaves with the multilayer supporting course.
101., it is characterized in that described multilayer acoustic attenuation layer comprises as the described ultrasound catheter probe of claim 100:
The first acoustic attenuation layer with first thickness, the wherein said first acoustic attenuation layer comprises more than first via hole, described more than first via hole limits many paths by described first thickness of the described first acoustic attenuation layer; And
Second sound damping layer with second thickness, wherein said second sound damping layer comprises more than second via hole, described more than second via hole limits many paths by described second thickness of described second sound damping layer, wherein said a plurality of supporting course comprises common supporting material, and at least a portion in described more than first via hole and described more than second via hole is filled by described common supporting material.
102., it is characterized in that described active layer comprises a plurality of ultrasound transducer element as the described ultrasound catheter probe of claim 101.
103., it is characterized in that described at least one ultrasound transducer element can be used for carrying out the emission ultrasonic signal and receives at least a in the ultrasonic signal as the described ultrasound catheter of claim 101 probe.
104., it is characterized in that described acoustic attenuation layer comprises the polymkeric substance with pore texture as the described ultrasound catheter probe of claim 101.
105. as the described ultrasound catheter of claim 104 probe, it is characterized in that described polymkeric substance is PTFE, the acoustic attenuation of unit thickness that wherein has the described polymkeric substance of pore texture is the twice at least of acoustic attenuation of the unit thickness of described supporting material.
106., it is characterized in that described common supporting material is selected from the group of being made of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP as the described ultrasound catheter probe of claim 101.
107., it is characterized in that described multilayer acoustic attenuation layer comprises the polymkeric substance with pore texture, and wherein said multilayer supporting course comprises supporting material as the described ultrasound catheter probe of claim 100.
108. as the described ultrasound catheter probe of claim 107, it is characterized in that, described polymkeric substance is selected from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin, and described supporting material is selected from the group of being made up of polymkeric substance, pottery and metal.
109. as the described ultrasound catheter probe of claim 108, it is characterized in that described multilayer acoustic attenuation layer respectively has the thickness less than 800 microns, wherein said multilayer supporting course respectively has the thickness less than 500 microns.
110. a ultrasound transducer system comprises:
Active layer with acoustics face and back, wherein said active layer comprises at least one ultrasound transducer element, wherein said back is in a described active layer side opposite with described acoustics face; And
Interconnect to the acoustic attenuation layer of described back, wherein said acoustic attenuation layer comprises:
(a) has the fibrous polymer of pore texture; And
(b) reinforcement material.
111., it is characterized in that described acoustic attenuation layer comprises fibrous polymer and reinforcement material as the described ultrasound transducer system of claim 110.
112., it is characterized in that described acoustic attenuation layer comprises the porous polymeric fibres as the described ultrasound transducer system of claim 111.
113., it is characterized in that described acoustic attenuation layer has the acoustic attenuation greater than 25dB/cm as the described ultrasound transducer system of claim 111 under 1MHz.
114., it is characterized in that described polymkeric substance is selected as the described ultrasound transducer system of claim 110 from the group of being made of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
115., it is characterized in that described polymkeric substance is PTFE as the described ultrasound transducer system of claim 114.
116., it is characterized in that described at least one ultrasound transducer element can be used for carrying out the emission ultrasonic signal and receives at least a in the ultrasonic signal as the described ultrasound transducer system of claim 110.
117., it is characterized in that described at least one ultrasound transducer element can be used for transmitting and receiving ultrasonic signal as the described ultrasound transducer system of claim 116.
118., it is characterized in that at least one in described at least one ultrasound transducer element is smooth as the described ultrasound transducer system of claim 110.
119., it is characterized in that at least one in described at least one ultrasound transducer element is crooked as the described ultrasound transducer system of claim 110.
120., it is characterized in that described reinforcement material is one or more in thermoplastic and the thermosets as the described ultrasound transducer system of claim 110.
121., it is characterized in that described reinforcement material is selected as the described ultrasound transducer system of claim 120 from the group of being made of THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
122., it is characterized in that described pore texture is partially filled by described reinforcement material as the described ultrasound transducer system of claim 120.
123. as the described ultrasound transducer system of claim 110, it is characterized in that, also comprise the middle layer that is arranged between described back and the described acoustic attenuation layer, wherein said middle layer comprises the material of selecting from the group of being made up of epoxy resin, silicon rubber, tungsten, aluminium oxide, mica and microsphere.
124. a ultrasound transducer system comprises:
Active layer with acoustics face and back, wherein said active layer comprises at least one ultrasound transducer element, wherein said back is in a described active layer side opposite with described acoustics face; And
Interconnect to the backing spare of described back, described backing spare comprises textle layers, wherein said textle layers is fibrous by many, described many fibers are made up of polymkeric substance, wherein said textle layers limits the textle layers void space between the described many fibers, and at least a portion of wherein said textle layers void space is filled by reinforcement material.
125., it is characterized in that described many fibers are made up of PTFE as the described ultrasound transducer system of claim 124, wherein said reinforcement material is made up of THV.
126. as the described ultrasound transducer system of claim 124, it is characterized in that, also comprise:
Second textle layers, wherein said second textle layers is fibrous by more than second, and described more than second fiber is made up of described polymkeric substance, and described more than second fiber has described fiber holes gap structure; And
Adhesive phase between described textle layers and described second textle layers, wherein said adhesive phase is engaged to described second textle layers with described textle layers.
127. as the described ultrasound transducer system of claim 124, it is characterized in that, described backing spare also comprises the middle layer that is arranged between described back and the described textle layers, and wherein said middle layer comprises the material of selecting from the group of being made up of epoxy resin, silicon rubber, tungsten, aluminium oxide, mica and microsphere.
128., it is characterized in that described middle layer comprises epoxy resin as the described ultrasound transducer system of claim 127.
129. as the described ultrasound transducer system of claim 124, it is characterized in that, also comprise electrical connecting member, wherein said electrical connecting member by insulating material and many independently conductive path form, each bar in wherein said many conductive paths electrically contacts with respect to a corresponding horizontally set in described at least one ultrasound transducer element and with it.
130. as the described ultrasound transducer system of claim 124, it is characterized in that, also comprise many continuous paths by described backing spare, wherein said many continuous paths to small part is filled by conductive material, and each bar in wherein said many continuous paths can be used for providing the conductive path by described backing spare.
131., it is characterized in that described many fibers comprise multiporous fiber as the described ultrasound transducer system of claim 124.
132., it is characterized in that described multiporous fiber has the porosity less than about 85% as the described ultrasound transducer system of claim 131.
133., it is characterized in that described multiporous fiber has the porosity at least about 5% as the described ultrasound transducer system of claim 131.
134. the method for the acoustic energy on the ultrasonic transducer back is incided in a reduction, described method comprises:
Provide to comprise poromeric material layer, wherein said material layer has front surface and rear surface;
Adjoin the described back of described ultrasonic transducer and locate described material layer, wherein said front surface contacts face-to-face with described back, and wherein said rear surface contacts with fluid;
In described material layer, absorb from the described acoustic energy that sends later; And
In described material layer, be absorbed into the acoustic energy that is mapped on the described rear surface.
135., it is characterized in that described fluid is a gas as the described method of claim 134.
136., it is characterized in that described material comprises one deck porous polymer fibrous woven layer at least as the described method of claim 134, void space to the small part in wherein said each layer of the porous polymer of one deck at least fibrous woven layer is filled by non-porous polymer.
137., it is characterized in that described porous polymer is selected as the described method of claim 134 from the group of being made of carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
138., it is characterized in that described porous polymer is PTFE as the described method of claim 134.
139., it is characterized in that the frequency of described acoustic energy is between 100kHz and 100MHz as the described method of claim 134.
140. an acoustic attenuation material comprises:
Be applicable to first textle layers of ultrasound transducer means, wherein said first textle layers can be used for decaying and incides acoustic energy on described first textle layers, wherein said first textle layers is fibrous by more than first, described more than first fiber has the first fiber holes gap structure, and wherein said first textle layers limits the ground floor void space between described more than first fiber; And
Reinforcement material, wherein said ground floor void space to small part is filled by described reinforcement material.
141. as the described acoustic attenuation material of claim 140, it is characterized in that, also comprise second textle layers, wherein said second textle layers is fibrous by more than second, wherein said second textle layers limits the second layer void space between described more than second fiber, and wherein said second layer void space to small part is filled by described reinforcement material.
142. as the described acoustic attenuation material of claim 141, it is characterized in that, also comprise the epoxy resin layer between described first textle layers and described second textle layers.
143., it is characterized in that described reinforcement material comprises the material of selecting as the described acoustic attenuation material of claim 140 from the group of being made of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
144., it is characterized in that described more than first fiber is made up of PTFE as the described acoustic attenuation material of claim 140.
145., it is characterized in that described more than first fiber is made up of the polymkeric substance of selecting as the described acoustic attenuation material of claim 140 from the group of being made of carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
146., it is characterized in that the frequency of described acoustic energy is between 100kHz and 100MHz as the described acoustic attenuation material of claim 140.
147. a sound fading device comprises:
Acoustic attenuation material, this acoustic attenuation material can be used for decaying and incide acoustic energy on the described material; And
Interconnect to the supporting structure of described acoustic attenuation material, wherein said acoustic attenuation material comprises first ingredient of being made up of the polymkeric substance with pore texture and second ingredient of being made up of supporting material.
148., it is characterized in that described pore texture is partially filled by described second ingredient as the described sound fading device of claim 147.
149., it is characterized in that described first ingredient is made up of the fibrous woven layer as the described sound fading device of claim 147, described fiber has described pore texture.
150., it is characterized in that described polymkeric substance is selected as the described sound fading device of claim 147 from the group of being made of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
Incide acoustic energy on it 151. an acoustic attenuation material, this acoustic attenuation material can be used for decaying, described material comprises:
By first ingredient that first polymkeric substance is formed, described first ingredient has pore texture; And
Second ingredient of forming by second polymkeric substance, wherein said pore texture part is filled by described second ingredient, wherein said first ingredient has first modulus in flexure during no described second ingredient in described pore texture, wherein said first ingredient has second modulus in flexure when described second ingredient partly is arranged in the described pore texture, wherein said first modulus in flexure is lower than described second modulus in flexure.
152., it is characterized in that described porosity is between 5% and 85% as the described acoustic attenuation material of claim 151.
153., it is characterized in that described first ingredient has the acoustic attenuation of 25dB/cm at least as the described acoustic attenuation material of claim 151 when described pore texture does not have described second ingredient under 1MHz.
154., it is characterized in that described first polymkeric substance is selected as the described acoustic attenuation material of claim 151 from the group of being made of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
155., it is characterized in that described second polymkeric substance is selected as the described acoustic attenuation material of claim 151 from the group of being made of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
156., it is characterized in that the frequency of described acoustic energy is between 100kHz and 100MHz as the described acoustic attenuation material of claim 151.
157. an acoustic attenuation material comprises:
Ground floor, described ground floor are applicable to that decay has the acoustic energy of the frequency between 100kHz and the 100MHz, and have first rigidity and first acoustic attenuation; And
The second layer, the described second layer have second rigidity and second sound decay,
Described first rigidity is less than described second rigidity, and described first acoustic attenuation is than the big at least twice of described second sound decay.
158. as the described acoustic attenuation material of claim 157, it is characterized in that, described ground floor is made up of the polymkeric substance of selecting from the group of being made up of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin, wherein said ground floor has pore texture, and the wherein said second layer is made up of the supporting material of selecting from the group of being made up of epoxy resin, THV, FEP, PTFE, PES, EFEP, PET, PEEK, PEI, PC and LCP.
159., it is characterized in that described porosity is 5% at least as the described acoustic attenuation material of claim 158.
160., it is characterized in that described first acoustic attenuation is at least 50dB/cm as the described acoustic attenuation material of claim 158 under 1MHz.
161., it is characterized in that described ground floor is made up of PTFE as the described acoustic attenuation material of claim 158.
162., it is characterized in that the part of described pore texture is filled by described supporting material as the described acoustic attenuation material of claim 158.
163. acoustic attenuation material, this acoustic attenuation material can be used for decaying and incides acoustic energy on it, described material comprises textle layers, wherein said textle layers is fibrous by many, described many fibers have the fiber holes gap structure, wherein said textle layers is made up of PTFE, and wherein said textle layers limits the textle layers void space between the described many fibers, and at least a portion of wherein said textle layers void space is filled by THV.
164. as the described acoustic attenuation material of claim 163, it is characterized in that, also comprise second textle layers, described second textle layers is fibrous by more than second, described more than second fiber has described fiber holes gap structure, and wherein said second textle layers is made up of PTFE.
165. as the described acoustic attenuation material of claim 164, it is characterized in that, also comprise the layer of bonding material between described textle layers and described second textle layers.
166., it is characterized in that described layer of bonding material is made up of sticky polymers as the described acoustic attenuation material of claim 165.
167., it is characterized in that described sticky polymers is made up of epoxy resin as the described acoustic attenuation material of claim 166.
168., it is characterized in that the frequency of described acoustic energy is between 100kHz and 100MHz as the described acoustic attenuation material of claim 163.
169., it is characterized in that described acoustic attenuation material has the acoustic attenuation of 25dB/cm at least as the described acoustic attenuation material of claim 163 under 1MHz.
170. as the described acoustic attenuation material of claim 163, it is characterized in that, also comprise many continuous paths by described acoustic attenuation material, wherein said many continuous paths to small part is filled by conductive material, and each bar in wherein said many continuous paths can be used for providing the conductive path by described acoustic attenuation material.
171., it is characterized in that described fiber porosity is 5% at least as the described acoustic attenuation material of claim 163.
172. the method for an acoustic energy attenuation, described method comprises:
The member that will comprise the porous polymer layer is placed in the path of the acoustic energy that will decay;
In described member, absorb at least a portion of described acoustic energy; And
Support described porous polymer layer with one deck supporting material at least.
173. as the described method of claim 172, it is characterized in that described layer is a textle layers, wherein said textle layers comprises described poromeric many fibers, wherein said textle layers limits void space, and wherein said void space to small part is filled by described supporting material.
174., it is characterized in that described member comprises the multi-layered textile layer as the described method of claim 173, wherein layer of bonding material is set between the adjacent courses of described multi-layered textile layer.
175., it is characterized in that described porous polymer is selected as the described method of claim 172 from the group of being made of PTFE, carbamate, polystyrene, fluoropolymer, silicone and polyolefin.
176., it is characterized in that described porous polymer is PTFE as the described method of claim 175.
177. as the described method of claim 172, it is characterized in that described member has front side and rear side, wherein said placement step comprises adjoins the described member of a surface alignment, wherein said front side contacts face-to-face with described surface, and wherein said second side contacts with fluid;
Wherein said absorption step is included in the acoustic energy that absorption is sent from described surface in the described member, and is absorbed into the acoustic energy that is mapped on the described rear side in described member.
178., it is characterized in that described fluid is a gas as the described method of claim 177.
179., it is characterized in that described placement step is carried out as the described method of claim 172 in predetermined, the wherein said absorption step acoustic energy in the described predetermined of decaying.
Incide acoustic energy on it 180. an acoustic attenuation material, this acoustic attenuation material can be used for decaying, described material comprises:
Textle layers,
Wherein said textle layers is fibrous by many, and described many fibers have the fiber holes gap structure,
Wherein said textle layers is made up of PTFE, and described textle layers limits the textle layers void space between the described many fibers, and at least a portion of wherein said textle layers void space is filled by THV.
181., it is characterized in that as the described acoustic attenuation material of claim 180, also comprise second textle layers,
Wherein said second textle layers is fibrous by more than second, and described more than second fiber has described fiber holes gap structure, and wherein said second textle layers is made up of PTFE.
182., it is characterized in that the frequency of described acoustic energy is between 100kHz and 100MHz as the described acoustic attenuation material of claim 180.
183., it is characterized in that described acoustic attenuation material has the acoustic attenuation of 25dB/cm at least as the described acoustic attenuation material of claim 180 under 1MHz, also comprise many continuous paths by described acoustic attenuation material.
184., it is characterized in that described many continuous paths to small part is filled by conductive material as the described acoustic attenuation material of claim 180, each bar in wherein said many continuous paths can be used for providing the conductive path by described acoustic attenuation material.
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| PCT/US2008/003576 WO2008121238A2 (en) | 2007-03-30 | 2008-03-19 | Improved ultrasonic attenuation materials |
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| KR (1) | KR101169131B1 (en) |
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| KR102388081B1 (en) * | 2019-12-30 | 2022-05-10 | 알피니언메디칼시스템 주식회사 | Ultrasound probe |
| KR102624928B1 (en) * | 2020-11-04 | 2024-01-16 | 지멘스 메디컬 솔루션즈 유에스에이, 인크. | Ultrasound transducer and method of manufacturing ultrasound transducer |
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- 2008-03-19 JP JP2010500927A patent/JP2010527167A/en not_active Withdrawn
- 2008-03-19 AU AU2008233201A patent/AU2008233201A1/en not_active Abandoned
- 2008-03-19 WO PCT/US2008/003576 patent/WO2008121238A2/en active Application Filing
- 2008-03-19 EP EP08726960.1A patent/EP2132729B1/en not_active Not-in-force
- 2008-03-19 CA CA2681578A patent/CA2681578C/en active Active
- 2008-03-19 CN CN2008800144388A patent/CN101675468B/en not_active Expired - Fee Related
- 2008-03-19 KR KR1020097022692A patent/KR101169131B1/en active IP Right Grant
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2013
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| CN103208282B (en) * | 2012-01-11 | 2018-01-05 | 精工爱普生株式会社 | Ultrasonic transducer, ultrasonic detector, diagnostic device and electronic equipment |
| CN103208282A (en) * | 2012-01-11 | 2013-07-17 | 精工爱普生株式会社 | Ultrasonic transducer, ultrasonic probe, diagnostic instrument, and electronic instrument |
| CN105726059A (en) * | 2014-12-26 | 2016-07-06 | 三星麦迪森株式会社 | Probe and manufacturing method thereof |
| CN105726059B (en) * | 2014-12-26 | 2021-05-04 | 三星麦迪森株式会社 | Probe and method of manufacturing the same |
| CN106466953A (en) * | 2015-08-21 | 2017-03-01 | 上海宝信软件股份有限公司 | Orientation leads sound material and its manufacture method |
| CN109492500A (en) * | 2017-09-12 | 2019-03-19 | 南昌欧菲生物识别技术有限公司 | Ultrasonic wave biological identification device and preparation method thereof and electronic equipment |
| CN111203374A (en) * | 2018-11-21 | 2020-05-29 | 美国西门子医疗系统股份有限公司 | Composite acoustic absorber for ultrasound transducer array |
| CN113474081A (en) * | 2018-11-27 | 2021-10-01 | 卡本艾尔有限公司 | Cavity and active region |
| CN111248939A (en) * | 2018-11-30 | 2020-06-09 | 通用电气公司 | Method and system for acoustically attenuating material |
| US11717265B2 (en) | 2018-11-30 | 2023-08-08 | General Electric Company | Methods and systems for an acoustic attenuating material |
| CN111248939B (en) * | 2018-11-30 | 2023-09-01 | 通用电气公司 | Method and system for acoustically attenuating material |
| CN114798400A (en) * | 2022-04-24 | 2022-07-29 | 杭州电子科技大学 | Ultrasonic transducer backing and preparation and harmonic attenuation coefficient regulation and control method thereof |
| CN116178902A (en) * | 2023-04-26 | 2023-05-30 | 淄博宇海电子陶瓷有限公司 | Backing layer of ultrasonic liquid concentration sensor and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2681578C (en) | 2014-01-21 |
| WO2008121238A2 (en) | 2008-10-09 |
| CN101675468B (en) | 2012-11-28 |
| JP5508572B2 (en) | 2014-06-04 |
| KR20100003290A (en) | 2010-01-07 |
| EP2132729A2 (en) | 2009-12-16 |
| CA2681578A1 (en) | 2008-10-09 |
| JP2013223733A (en) | 2013-10-31 |
| AU2008233201A1 (en) | 2008-10-09 |
| WO2008121238A3 (en) | 2008-12-04 |
| EP2132729B1 (en) | 2013-09-18 |
| JP2010527167A (en) | 2010-08-05 |
| KR101169131B1 (en) | 2012-07-30 |
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